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libsignal

v5.0.8 · released 12 days ago · AGPL-3.0 License

First published 6 months ago.

Dart wrapper for libsignal. Signal Protocol implementation for end-to-end encryption, sealed sender, group messaging, and secure cryptographic operations.

View on pub.dev View source
#134 in Cryptography #5808 overall androidioswindowslinuxmacosweb
Downloads / day
40
as of 2026-07-06
GitHub stars
8
★ refreshed weekly
Likes
3
on pub.dev
Pub points
150 / 160
2026-06-06 2026-07-06

Repository health

Last commit
11 days ago
Commit activity
Open issues
0
Open PRs
1
Contributors
2 (top contributor 99%)
CI
GitHub Actions
License (repo)

Last refreshed 9 days ago.

License explained · AGPL-3.0

GNU Affero General Public License v3.0

Strongest copyleft. Like GPL, but ALSO triggers when you offer the software as a network service (SaaS). Avoid for most commercial apps.

Permissions of this strongest copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license.

You can

  • Commercial use
  • Distribution
  • Modification
  • Patent use
  • Private use

You must

  • Disclose source
  • Include the license and copyright notice
  • Network use counts as distribution
  • Larger work must use the same license
  • State significant changes

The license does not

  • No liability
  • No warranty

Plain-English summary, not legal advice. Full text on SPDX or choosealicense.com. Summaries adapted from choosealicense.com (a GitHub project, MIT-licensed).

Commit activity, past 52 weeks

libsignal

270 commits in the past year
Stable
35 18 0 52w ago36w ago18w agothis week
Weekly average
5 commits
Busiest week
31 commits, 20 weeks ago
Active weeks
26 of 52 (50%)
Longest quiet stretch
25 weeks with no commits

Weekly commits to the default branch on GitHub. Source: GET /stats/participation. Refreshed weekly. Excludes commits to other branches.

How libsignal compares in Cryptography

Top of the Cryptography leaderboard, with libsignal highlighted.

Rank Package Downloads / day Stars Likes
#1
crypto
🇺🇸 dart.dev
301.6K ★ 69 1.9K
#2
flutter_secure_storage
🇸🇬 steenbakker.dev
104.7K ★ 1.3K 4.5K
#3
pointycastle
🇦🇺 bouncycastle.org
87.5K ★ 282 408
#4
asn1lib
 42.9K ★ 31 27
#134
libsignal
 40 ★ 8 3