18 years ago FrostWire began as a community-driven fork with a mission: keep decentralized file-sharing alive, open, and powerful. In 2025 we’re still here — evolving faster than ever.
Today, we’re proud to introduce FrostWire 7
A massive leap forward. A brand-new era for the app.
Not a facelift — an entirely new heart.
🚀 A New BitTorrent Engine for a New Decade
Under the hood, FrostWire 7 is powered by jlibtorrent 2.0:
two years of engineering, hundreds of optimizations, and native support for BitTorrent v2.
What that means to you:
- Faster swarm performance
- Better integrity checking
- More resilient downloading
- Hybrid v1+v2 torrents that “just work”
- Optimized disk I/O for modern hardware
This is the biggest peer-to-peer core upgrade in FrostWire’s history.
✂️ No More Ads. No Bundled Garbage. Just Open Source.
We’re done with the distractions.
- 0% third-party ads
- 0% bundled installer offers
- 100% free & open-source
FrostWire is now fully community-supported — donations and optional VPN referrals keep the lights on.
The app belongs to users again.
If you believe in a world where software is free because it is free — we’d love your help.
🔍 The Search Experience Rebuilt From Scratch
We demolished our legacy search architecture and rebuilt the engine to be leaner and faster:
- Up to 50% less memory allocation
- New performers like Knaben and TorrentCSV
- Far quicker result rendering
- Smarter I/O scheduling so search doesn’t freeze the UI
Search feels snappy again — even on older systems.
⚡ FrostWire 7 Starts Faster and Stays Smooth
A huge part of this cycle focused on eliminating UI freezes and making startup feel instant. We pushed expensive tasks off the main UI thread — all 19+ offenders fixed.
Benefits you’ll feel right away:
- Launch in seconds, not ages
- Smooth scrolling through huge torrent lists
- Zero-stall layout rendering
- More responsive search result interaction
We want FrostWire to be a fast desktop app, not “a Java app that runs like one.”
🧩 Smarter Packaging: Simpler Installs, Broader Linux Support
This release also marks a major cleanup in how FrostWire ships across platforms.
Linux: One Package to Run Them All
We’ve moved away from distro-specific packaging like .deb and .rpm. They constantly forced us into whack-a-mole compatibility battles across dozens of flavors.
Instead, FrostWire 7 now ships as:
- Linux x86_64
.tar.gz - Linux ARM64
.tar.gz(yes, Raspberry Pi users and macOS with Apple Silicon on UTM containers — finally!)
Just unpack and run:
./frostwire
Or choose a full installation so your desktop environment recognizes FrostWire automatically:
./install.sh
You can remove it just as easily:
./uninstall.sh
Tested across GNOME, KDE, XFCE, Cinnamon — everywhere Linux thrives.
One archive. All Linux. Zero drama.
macOS: The .pkg Era
We’ve retired the old .dmg drag-and-drop days.
FrostWire for macOS now uses a modern .pkg installer:
- Double-click
- Follow the dialog
- Done
No more wondering where the app actually landed.
🎧 Less is More — Media Player Removed
FrostWire 7 no longer ships with its own audio/video player.
Why?
- Less binary bloat
- Less CPU/memory footprint
- Less maintenance overhead
Your OS already has a media player — and usually a better one.
So now playback just hands off to the default app.
More focus, fewer bundled components.
🛠️ And Thousands of Under-the-Radar Improvements
Cleaner codebase.
Modern libraries.
Better diagnostics.
Safer crypto.
New hashing support.
Countless bug fixes from years of backlog.
We even finally removed legacy Azureus code that had been haunting the repo since the early 2000s.
FrostWire 7 is the most stable, modern, and maintainable version we have ever shipped.
🌎 Built by and for the Open-Source Peer-to-Peer Movement
FrostWire 7 is more than just revision numbers and changelog entries — it’s a statement:
Decentralized file sharing deserves fast, transparent, user-owned tools.
No corporate lock-in. No telemetry farms. No crypto-mining in the background.
Just freedom to share.
If that vision resonates with you…
- Star us on GitHub
- Submit code
- Help test betas
- Donate if you can
Every bit of support helps keep the project alive and independent.
🔥 Welcome to the Future of FrostWire
Download FrostWire 7 today.
Rejoin the swarm.
Let’s keep building an internet that cannot be censored.
👉 The Future is Peer-to-Peer.
frostwire (7.0.0) stable; urgency=high
- New:Powered by Jlibtorrent 2.0.12.5 with bittorrent 2.0 support and hundreds of optimizations
- New:Dynamic SoundCloud client ID and app version fetching from remote server for uninterrupted service
- New:TorrentCSV search performer
- New:Knaben Database Search Performer
- New:Partial selection file dialog now allows shift-click to select ranges of files in torrents
- New:settings panel to pick location for .torrent files
- New:FlatLaf light theme
- New:Header bar rearranged, search bar goes to the center, nav buttons on the left, FW Logo first
- New:Torrent Transfer > Advanced > Check local data feature. If a file belonging to a torrent is now on disk it can be force checked
- New:Audio and video playback now uses the operating system’s default media player instead of custom player infrastructure
- New:Strict EDT Mode to catch long running tasks stalling event dispatch thread
- EDT freeze:Comprehensive startup performance overhaul – defer heavy class loading and I/O to prevent EDT blocking during initialization (19 EDT violations fixed)
- EDT freeze:ResourceManager uses deferred image loading instead of synchronous MediaTracker to avoid blocking on image I/O
- EDT freeze:LibraryCoverArtPanel defers component listener initialization with SwingUtilities.invokeLater()
- EDT freeze:SearchMediator uses lazy singleton pattern with deferred SearchResultDisplayer creation
- EDT freeze:MPlayerInstance.runCommand() moved to background thread to avoid Process.waitFor() blocking EDT
- EDT freeze:SearchResultDisplayer creation deferred with placeholder component to avoid class loading file I/O during tab initialization
- EDT freeze:SplashWindow preloads OS icons during initialization to avoid file I/O during paint operations
- EDT freeze:StatusLine defers bandwidth label icon loading to background EDT cycle using SwingUtilities.invokeLater()
- EDT freeze:ApplicationHeader defers MediaPlayerComponent creation with placeholder panel to prevent class loading during startup
- EDT freeze:MainFrame defers expensive minimum size calculations to background thread – prevents 2+ second EDT blocking from cascading layout calculations
- EDT freeze:AbstractTab implements lazy icon loading to defer tab icon loading via SwingUtilities.invokeLater() on first getIcon() call
- EDT freeze:SearchResultActionsRenderer defers 5 action button icons (play, download, details, speaker) via lazy static initialization with ensureIconsLoaded()
- EDT freeze:AbstractActionsRenderer defers 3 action button icons (play, download, share) via lazy static initialization with ensureIconsLoaded()
- EDT freeze:SourceRenderer defers 7 source icons (soundcloud, archive.org, tpb, zooqle, magnetdl, default, 1337x) via lazy static initialization with ensureIconsLoaded()
- EDT freeze:TransferActionsRenderer defers 2 action button icons (play, share) via lazy static initialization with ensureIconsLoaded()
- EDT freeze:TransferSeedingRenderer defers 2 seeding icons (seed, loading) via lazy static initialization with ensureIconsLoaded()
- EDT freeze:TransferDetailFilesActionsRenderer defers 2 file action icons (play, share) via lazy static initialization with ensureIconsLoaded()
- EDT freeze:PaymentOptionsRenderer defers 4 payment method icons (bitcoin_enabled, bitcoin_disabled, paypal_enabled, paypal_disabled) via lazy static initialization
- EDT freeze:LogoPanel defers logo_header icon loading via SwingUtilities.invokeLater() with placeholder label
- EDT freeze:MediaButton defers button icon loading (up and down icons) via SwingUtilities.invokeLater() in loadIcons() method
- EDT freeze:LimeJFrame defers window icon loading via SwingUtilities.invokeLater() in loadWindowIcon() method
- Performance:These EDT fixes significantly improve startup time and responsiveness, especially on resource-constrained systems and older hardware
- Performance:Search architecture optimizations – 25-50% reduction in memory allocations
- Performance:SizeParser utility consolidates duplicate implementations, 200+ lines of code eliminated
- Performance:SearchMatcher memory optimization reduces garbage collection pressure by 25%
- Performance:YT pattern static initialization and string operation optimization
- Maintenance:SearchTimeoutException provides better diagnostics with performer and domain context
- Maintenance:Search package hierarchy flattened, V2 package consolidated
- Removed:TorrentDownloads search performer (site offline permanently)
- Removed:BTDigg search performer (protected by Cloudflare, unable to reliably parse search results)
- Maintenance:mplayer not available in linux warning can now not be shown ever again
- Removed:Torlock search performer (old site is down, new site is malicious)
- Removed:LimeTorrents search performer
- Maintenance:MacEventHandler is now compatible with JDK 23 and JDK 24
- Maintenance:Archive.org search
- Maintenance:GloTorrents search
- Maintenance:Idope search
- Maintenance:MagnetDL search
- Crash: fixed NPE in MultilineToolTip.updateUI() when switching from Synth L&F
- Removed:FrostWire Media Player custom built-in audio/video player (fwplayer binaries for Windows/macOS/Linux)
- Removed:MPlayer integration code and process management for audio playback
- Removed:Player settings panel and configuration options
- Removed:Playback state tracking and speaker icon indicators in UI components (TransferActionsRenderer, LibraryFilesTableDataLine, SearchResultActionsRenderer, etc.)
- Removed:Speaker icon assets (speaker.png, speaker_light.png)
- EDT freeze:moved media checks off EDT; coalesce selection; add EDT I/O guard
- EDT freeze: Fix in TransferDetailFiles by moving heavy I/O to background thread, would stall app when opening large torrents on startup
- Cleanup:removed all remnants of azureus source code
- Optimization:PerformersHelper.sanitize() 8.8x speed gains in title normalization by not using a regex and instead simple string replacements
- Fixed:logic bug in PerformersHelper.countMatchedTokens()
- Cleanup:apple libdispatch removal
- Cleanup:deprecated iTunes integration removed after cleanups. Users can manage their own playlists on Apple Music.
- New: libtorrent::set_piece_hashes_posix_disk_io to avoid SIGSEGV/SIGBUS leaks to macos when creating torrents
- Crash:don’t crash if a null set_piece_hashes_listener is passed to set_piece_hashes_ex
- Crash:StatusLine seedingStatusButton.getText()
- Crash:ConcurrentModificationException in Ssl$FWHostnameVerifier
- Cleanup:Remove unused sun.awt.X11 classes (linux)
- Maintenance:fix javadoc errors, javadoc cleanup
- Maintenance:all license headers are consistent with GPL 3.0
- Maintenance:simplified donations buttons in status bar to a single ‘Donate’ button
- Maintenance:added don’t show me again for linux warning when mplayer isn’t found
- Maintenance:fwplayer_osx.arm64 rebuilt with OpenSSL 3.5.3 support
- Speed-up:reuse OkHttpClient instances to unlock connection pooling and reduce GC pressure
- Speed-up:Cache torrent-search date parsers to eliminate per-result SimpleDateFormat allocations
- Speed-up:Use buffered I/O for large transfers in OkHttpClientWrapper.save and ZipUtils.unzip. Up to 96% CPU savings in sys write calls, 30-50% reduction in CPU during I/O operations, search results should come out a lot faster
- Speed-up:Optimize Levenshtein distance allocation footprint in PerformersHelper fuzzy matching
- Speed-up:Optimize hot paths for string sanitizers – eliminate regex compilation overhead in search and scrapes (UrlUtils and StringUtils)
- Speed-up:Optimize hot paths for Logger, ThreadPool, and collection sizing
- Speed-up:Refactor SearchManager tasks to Runnable and remove Thread.yield() from hot path
- Fixed:thread leak and data race in UrlUtils.getFastestMirrorDomain
- EDT freeze:Comprehensive fix for EDT violations in transfers UI with multiple optimization layers
- EDT freeze:Move BTDownloadModel.refresh() to background thread to prevent EDT blocking during model updates
- EDT freeze:Add debouncing to BTDownloadDataLine.update() to prevent rapid successive JNI calls
- EDT freeze:Throttle TransferActionsRenderer state checks to 200ms intervals during table rendering
- EDT freeze:Move clearable downloads check to background thread in BTDownloadMediator.doRefresh()
- EDT freeze:Add count caching to BTDownloadModel with background updates every 500ms
- EDT freeze:Cache active uploads for hidden downloads in BTDownloadRowFilteredModel
- EDT freeze:Use cached transfer state instead of expensive JNI calls in button state updates
- jlibtorrent:libraries are now compiled with C++20 (ming/windows with C++2a which is the same)
- jlibtorrent:g++-9 upgraded to g++-11 for linux build
- jlibtorrent:new Sha256Hash::swig()
- jlibtorrent:new SessionManager::find(Sha256Hash) and SessionManager::find(TorrentInfo) methods
- jlibtorrent:built with android NDK r28c with 16K page size support
- Android 64-bit binaries are compiled to have 16KB max-page-size
- jlibtorrent:New com.frostwire:jlibtorrent- maven packages for easier integration with gradle/maven
- jlibtorrent:new torrent_handle::get_resume_data() : add_torrent_params
- jlibtorrent:new torrent_handle::get_resume_data(resume_data_flags_t flags) : add_torrent_params
- jlibtorrent:new settings_pack.int_types i2p_inbound_length_variance
- jlibtorrent:new settings_pack.int_types i2p_outbound_length_variance
- jlibtorrent:Jar built with JDK 17 – JAVA_17 compatibility
- jlibtorrentBoost 1.88.0 upgrade
- jlibtorrent:OpenSSL 3.5.2 upgrade (from 1.1.1t)
- jlibtorrent:Upgraded SWIG to 4.3.1
- jlibtorrent:Gradle 9.0.0
- dev:junit upgraded from 4.13.1 -> 4.13.2
- lt:add option to send host header in HTTP proxy CONNECT command
- lt:cache DNS failures for a shorter time
- lt:file_renamed_alert is always posted, regardless of alert mask
- lt:add feature to request resume data synchronously
- lt:don’t leak file descriptors to child processes (O_CLOEXEC)
- lt:optimize the utp resend
- lt:optimize tracker announcements
- lt:fix handling of invalid filenames
- lt:add support for I2CP inbound.lengthVariance and outbound.lengthVariance tunnel settings
- lt:validate add_torrent_params::save_path at run-time
- lt:use stricter rules for what filenames are valid on Android
- lt:fix applying IP filter to DHT traffic (HanabishiRecca)
- lt:fix race condition when cancelling requests after becoming a seed
- lt:fix performance bug in the file pool, evicting MRU instead of LRU (HanabishiRecca)
- lt:fix bug where file_progress could sometimes be reported as >100%
- jlibtorrent:BDecodeNode: hasList, hasDict, hasString, hasInt, getList, getDict, getString, getInt
- lt:limit piece size in torrent creator
- lt:don’t hint FADV_RANDOM on posix systems. May improve seeding performance
- lt:allow boost connect while checking resume data if no_verify_files flag is set
- lt:fix BEP-40 peer priority for IPv6
- lt:fix file pre-allocation when changing file priority (HanabishiRecca)
- jlibtorrent:SWIG interface files have been modularized for better maintainability and readability
- jlibtorrent:Added missing alert types
- jlibtorrent:Introduced typed_bitfield template
- jlibtorrent:Operator renaming for Java compatibility
- jlibtorrent:Included boost_system_error_code.i
- jlibtorrent:Added prepare-macos.sh script
- jlibtorrent:Updated run-swig.sh script
- jlibtorrent:Set TORRENT_ABI_VERSION=4
- jlibtorrent:Libtorrent updated to RC_2_0 (rev:2ab8fedabb7716947edc77958da6d0b5e1040df9)
- jlibtorrent:Android NDK r26d (LTS) upgrade (from r25c)
- jlibtorrent:Added
--swig-onlyand--build-onlyoptions to swig/build scripts - jlibtorrent:Added
prepare-macos.shscript for macOS build setup - jlibtorrent:Updated
run-swig.shscript for improved SWIG processing - jlibtorrent:Enhanced exception handling in SWIG interfaces
- jlibtorrent:Fixed issues in file_storage.hpp and ip_filter.hpp
- jlibtorrent:Adjusted build flags and macros for Boost and libtorrent compatibility
- jlibtorrent:Enabled SWIG directors for specific classes
- lt:fix uTP issue where closing the connection could corrupt the payload
- lt:apply DSCP/TOS to sockets before initiating the TCP connection
- lt:assume copy_file_range() exists on linux (unless old glibc)
- lt:fix issue where set_piece_deadline() did not correctly post read_piece_alert
- lt:fix integer overflow in piece picker
- lt:torrent_status::num_pieces counts pieces passed hash check, as documented
- lt:check settings_pack::max_out_request_queue before performance alert
- lt:allow on_unknown_torrent method in the absence of active torrents (new plugin feature added)
- lt:add feature to async_move_storage() to not move files
- lt:fix reject resume data if it contains mismatching info hashes
- lt:fix clear the candidate_cache when clear peer_list
- lt:fix missing python converter for dht::announce_flags_t
- lt:fix issue with web seed connections when they close and re-open
- lt:fallocate() not supported is not a fatal error
- lt:fix proxying of IPv6 connections via IPv4 proxy
- lt:treat CGNAT address range as local IPs
- lt:add stricter checking of piece layers when loading torrents
- lt:add stricter checking of v1 and v2 hashes being consistent
- lt:cache failed DNS lookups as well as successful ones
- lt:add an i2p torrent state to control interactions with clear swarms
- lt:fix i2p SAM protocol parsing of quoted messages
- lt:expose i2p peer destination in peer_info
- lt:fix i2p tracker announces
- lt:fix issue with read_piece() stopping torrent on pieces not yet downloaded
- lt:improve handling of allow_i2p_mixed setting to work for magnet links
- lt:fix web seed request for renamed single-file torrents
- lt:fix issue where web seeds could disappear from resume data
- lt:extend save_resume with additional conditional flags
- lt:fix issue with retrying trackers in tiers > 0
- lt:fix last_upload and last_download resume data fields to use posix time
- lt:improve error messages for no_connect_privileged_ports, by untangle it from the port filter
- lt:fix I2P issue introduced in 2.0.0
- lt:add async tracker status query, post_trackers()
- lt:add async torrent status query, post_status()
- lt:support loading version 2 of resume data format
- lt:fix issue with odd piece sizes
- lt:add async piece availability query, post_piece_availability()
- lt:add async download queue query, post_download_queue()
- lt:add async file_progress query, post_file_progress()
- lt:add async peer_info query, post_peer_info()
- lt:fix uTP streams timing out instead of closing cleanly
- lt:add write_torrent_file_buf() overload for generating .torrent files
- lt:add create_torrent::generate_buf() function to generate into a buffer
- lt:fix copy_file when the file ends with a sparse region
- lt:uTP performance, fix packet loss when sending is stalled
- lt:fix trackers being stuck after session pause/resume
- lt:fix bug in hash_picker with empty files
- lt:uTP performance, prevent premature timeouts/resends
- lt:add option to not memory map files below a certain size
- lt:settings_pack now returns default values when queried for missing settings
- lt:fix copy_file fall-back when SEEK_HOL/SEEK_DATA is not supported
- lt:improve error reporting from file copy and move
- lt:tweak pad file placement to match reference implementation (tail-padding)
- lt:uTP performance, more lenient nagle’s algorithm to always allow one outstanding undersized packet
- lt:uTP performance, piggy-back held back undersized packet with ACKs
- lt:uTP performance, don’t send redundant deferred ACKs
- lt:support incoming SOCKS5 packets with hostnames as source address, for UDP trackers
- lt:ignore duplicate network interface change notifications on linux
- lt:fix total_want/want accounting when forcing a recheck
- lt:fix merging metadata with magnet links added on top of existing torrents
- lt:add torrent_flag to default all file priorities to dont_download
- lt:fix &so= feature in magnet links
- lt:improve compatibility of SOCKS5 UDP ASSOCIATE
- lt:fix madvise range for flushing cache in mmap_storage
- lt:open files with no_cache set in O_SYNC mode~
- lt:fix issue in use of copy_file_range() on linux
- lt:avoid open-file race in the file_view_pool
- lt:fix issue where stop-when-ready would not close files
- lt:fix issue with duplicate hybrid torrent via separate v1 and v2 magnet links
- lt:added new function to load torrent files, load_torrent_*()
- lt:support sync_file_range() on linux
- lt:fix issue in write_torrent_file() when file size is exactly piece size
- lt:fix file_num_blocks() and file_num_pieces() for empty files
- lt:add new overload to make_magnet_uri()
- lt:add missing protocol version to tracker_reply_alert and tracker_error_alert
- lt:fix privilege issue with SetFileValidData()
- lt:add asynchronous overload of torrent_handle::add_piece()
- lt:default to a single hashing thread, for full checks
- lt:Fix bug when checking files and the first piece is invalid
- lt:fix issue creating a v2 torrent from torrent_info containing an empty file
- lt:make recheck files also update which files use partfile
- lt:add write_through disk_io_write_mode, which flushes pieces to disk immediately
- lt:improve copy file function to preserve sparse regions (when supported)
- lt:add function to truncate over-sized files part of a torrent
- lt:fix directory creation on windows shared folders
- lt:add flag to make add_files() not record file attributes
- lt:deprecate (unused) allow_partial_disk_writes settings
- lt:fix disk-full error reporting in mmap_disk_io
- lt:fixed similar-torrents feature for v2 torrents
- lt:fix potential unbounded recursion in add_completed_job, in disk I/O
- lt:deprecated (unused) volatile_read_cache setting
- lt:fix part files being marked as hidden on window
- lt:on windows, explicitly flush memory mapped files periodically
- lt:fix build with WolfSSL
- lt:fix issue where incoming uTP connections were not accepted over SOCKS5
- lt:fix several issues in handling of checking files of v2 torrents, esp. from magnet links
- lt:make the token limit when parsing metadata from magnet files configurable
- lt:fix issue with stalled pieces on disk full errors
- lt:fix missing python binding for file_progress_flags
- lt:fix torrent_file_with_hashes() to fail when we don’t have the piece layers
- lt:restore path character encoding conversion for non UTF-8 locales on linux
- lt:fix use-after-free bug in make_magnet_uri
- lt:add write_torrent_file() to produce a .torrent file from add_torrent_params
- lt:allow loading v2 .torrent files without piece layer
- lt:fix issue with adding v2 torrents with invalid file root hash
- lt:fix piece picker bug causing double-picks with prefer-contiguous enabled
- lt:expose session_params in python bindings
- lt:fix (deprecated) use of add_torrent_params::info_hash
- lt:fix issue creating and loading v2 torrents with empty files. Improves conformance to BEP52 reference implementation
- lt:add new torrent_file_with_hashes() which includes piece layers for creating .torrent files
- lt:add file_prio_alert, posted when file priorities are updated
- lt:fix issue where set_piece_hashes() would not propagate file errors
- lt:add missing python binding for event_t
- lt:add work-around for systems without fseeko() (such as Android)
- lt:add convenience header libtorrent/libtorrent.hpp
- lt:increase default max_allowed_in_request_queue
- lt:fix loading non-ascii filenames on windows with torrent_info constructor (2.0 regression)
- lt:add std::hash<> specialization for info_hash_t
- lt:fix integer overflow in hash_picker and properly restrict max file sizes in torrents
- lt:strengthen SSRF mitigation for web seeds
- lt:add v1() and v2() functions to torrent_info
- lt:fix piece_layers() to work for single-piece files
- lt:fix python binding regression in session constructor flags
- lt:fix unaligned piece requests in mmap_storage
- lt:improve client_data_t ergonomics
- lt:fix issue with concurrent access to part files
- lt:fix attribute in single-file v2 torrent creation
- lt:fix padding for empty files in v2 torrent creation
- lt:add function to ask a file_storage whether it’s v2 or not
- lt:fix mtime field when creating single-file v2 torrents
- lt:fix performance regression in checking files
- lt:disable use of SetFileValidData() by default (windows). A new setting allows enabling it
- lt:dropped dependency on iconv
- lt:deprecate set_file_hash() in torrent creator, as it’s superceded by v2 torrents
- lt:deprecate mutable access to info_section in torrent_info
- lt:removed deprecated lazy_entry/lazy_bdecode
- lt:stats_alert deprecated
- lt:remove bittyrant choking algorithm
- lt:update userdata in add_torrent_params to be type-safe and add to torrent_handle
- lt:add ip_filter to session_params
- lt:added support for wolfSSL for SHA-1 hash and HTTPS (no Torrents over SSL)
- lt:requires OpenSSL minimum version 1.0.0 with SNI support
- lt:deprecated save_state() and load_state() on session in favour of new
- lt:write_session_params() and read_session_params()
- lt:added support for BitTorrent v2 (see docs/upgrade_to_2.0.html)
- lt:create_torrent() pad_file_limit parameter removed
- lt:create_torrent() merkle- and optimize-alignment flags removed
- lt:merkle_tree removed from add_torrent_params
- lt:announce_entry expose information per v1 and v2 info-hash announces
- lt:deprecated sha1_hash info_hash members on torrent_removed_alert,
- lt:torrent_deleted_alert, torrent_delete_failed_alert and add_torrent_params
- lt:undeprecate error_file_metadata for torrent errors related to its metadata
- lt:remove support for adding a torrent under a UUID (used for previous RSS support)
- lt:remove deprecated feature to add torrents by file:// URL
- lt:remove deprecated feature to download .torrent file from URL
- lt:requires boost >= 1.66 to build
- lt:update networking API to networking TS compatible boost.asio
- lt:overhauled disk I/O subsystem to use memory mapped files (where available)
- lt:libtorrent now requires C++14 to build
- lt:added support for GnuTLS for HTTPS and torrents over SSL
- lt:fix issue where stop-when-ready would not close files
- lt:uTP performance, fix packet loss when sending is stalled
- lt:uTP performance, prevent premature timeouts/resends
- lt:uTP performance, more lenient nagle’s algorithm to always allow one outstanding undersized packet
- lt:uTP performance, piggy-back held back undersized packet with ACKs
- lt:uTP performance, don’t send redundant deferred ACKs
- lt:fix wanted_done/done accounting when force-rechecking
- lt:expose userdata via torrent_handle (back-port from 2.0)
- lt:fix renaming of filenames that are too long for the filesystem
- lt:made UPnP and LSD code avoid using select_reactor (to work around an issue on windows in boost.asio < 1.80)
Official FrostWire Blog 