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Janet: all versions and old releases

Janet is a functional and imperative programming language

7 versions of Janet are listed here, from April 24, 2023 to the current 1.43.0. Each one links to the publisher’s own installer files.

2023: 1 1 23 2024: 2 2 24 2025: 1 1 25 2026: 3 3 26

7 versions over 4 years · about 2 a year

VersionDateSizeFiles
1.43.0Latest November 7, 2026 — 64-bit MSI
Release notes
This release contains lots of fuzzing and LLM found fixes in Janet, as well as an improved bytecode optimizer. See CHANGELOG.md for the full changelog.
1.42.1 September 10, 2026 — 64-bit MSI
Release notes
Small patch of 1.42.0 that fixes the generated SONAME from the Makefile, as well as more documentation tweaks.
1.41.2 February 18, 2026 — 64-bit MSI
Release notes
There were some last-minute issues in the release of 1.41.1, namely a regression in out-of-bounds buffer and array indexing. This release fixes those issues. Thank you for your patience!
What's Changed
- Use snprintf instead of sprintf - sequel by @sogaiu in #1713
- Initialize memory allocated by put by @edsrzf in #1715
Full Changelog: v1.41.1...v1.41.2
1.38.0 March 19, 2025 — 64-bit MSI
Release notes
What's Changed
- file/open: check if directory by @strangepete in #1532
- Add ev/to-file for synchronous resource operations by @pyrmont in #1533
- Support dedenting long-strings with Windows EOLs by @pyrmont in #1534
- Tweak exit-value doc - address #1537 by @sogaiu in #1538
- Brief: Add Arm64 .msi support on Windows by @rwtolbert in #1541
- Fix docstrings for int/u64, int/s64 and int/to-number by @cideM in #1544
- Update CodeQL actions to latest version by @pyrmont in #1547
- add (til) PEG special by @ianthehenry in #1528
- Tweak apply and short-fn docstrings by @sogaiu in #1555
- Update CHANGELOG.md by @sogaiu in #1557
- Add script to update copyright dates by @pyrmont in #1563
- Improve subprocess-related docstrings and functions by @pyrmont in #1562
- Use Alpine Linux as base image for s390x testing by @pyrmont in #1564
- Update Makefile and meson to build with msys2 gcc and clang by @rwtolbert in #1568
- Fix vm bugs from #1566 by @sogaiu in #1569
- Remove janet_lib_ffi() dependency on JANET_EV by @tsujamin in #1572
New Contributors
- @strangepete made their first contribution in #1532
- @rwtolbert made their first contribution in #1541
- @cideM made their first contribution in #1544
- @tsujamin made their first contribution in #1572
Full Changelog: v1.37.1...v1.38.0
1.37.1 December 6, 2024 — 64-bit MSI
Release notes
What's Changed
- Add some detail to signal docstring by @sogaiu in #1506
- Replace gitter badge with zulip one by @sogaiu in #1510
- Mention nth and only-tags in changelog by @sogaiu in #1513
- Clarify installation info a bit by @sogaiu in #1515
- Cast arguments to int32_t before passing to janet_formatb with %d format specifier by @ArtSin in #1514
- Add assertf and use in boot.janet. Address #1516 by @sogaiu in #1517
- Update Docker command to use --platform flag by @pyrmont in #1518
- fix janet_string_equalconst by @ianthehenry in #1519
- Remove unused var pstatus by @sogaiu in #1522
- Additional tweak to address #1523 by @sogaiu in #1526
New Contributors
- @ArtSin made their first contribution in #1514
Full Changelog: v1.36.0...v1.37.1
1.33.0 January 9, 2024 — 64-bit MSI
Release notes
What's Changed
- Add more + and * keywords to default-peg-grammar by @sogaiu in #1313
- Use libc strlen in janet_buffer_push_cstring by @williewillus in #1314
- net/ev: Cleaned up unused NetStateConnect, fixed janet_async_end() ev refcount by @zevv in #1325
- fix (doc next) by @iacore in #1334
- Fix arity typo in peg by @pepe in #1336
- Cosmetically tweak string/format docstring by @sogaiu in #1340
- Add a new (sub) PEG special by @ianthehenry in #1344
- Prepare for 1.33.0 release by @pepe in #1351
New Contributors
- @williewillus made their first contribution in #1314
Full Changelog:
1.27.0 April 24, 2023 — 64-bit MSI

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