deterministic — open-source software health

PyPI · npm

93Exceptionalhealth index

The open‑source AI Agents Governance & Orchestration framework: write the rules declaratively, Bernstein enforces them and produces the verifiable, replayable record. Free, Apache-2.0. https://bernstein.run

Python★ 1,178Sep 14, 2026

Apache-2.0Sep 14, 2026 · metrics 2.10.0

Packagist · npm

89Excellenthealth index

php-vcr/php-vcr

Record your test suite's HTTP interactions and replay them during future test runs for fast, deterministic, accurate tests.

PHP★ 1,210↓ 68.7K/moSep 8, 2026

MITSep 8, 2026 · metrics 2.10.0

crates.io

88Excellenthealth index

Blackcat-Informatics/purrdf

PurRDF — one RDF 1.2 engine, one behavior, in Rust, Python, WebAssembly and C. Deterministic BM25 full-text search, exact GeoSPARQL 1.1 and embedding kNN answered from SPARQL, in-process, over one dataset: the three jobs a triple store usually kept PostgreSQL beside it for. Plus native codecs, RDFC-1.0, SHACL, ShEx, entailment and GTS transport.

Rust★ 45↓ 6,378/moSep 13, 2026

Apache-2.0Sep 13, 2026 · metrics 2.10.0

npm

88Excellenthealth index

alexey-pelykh/puppeteer-capture

A Puppeteer plugin for capturing page as a video with ultimate quality

TypeScript★ 22↓ 18.1K/moSep 14, 2026

MITSep 14, 2026 · metrics 2.10.0

npm

87Excellenthealth index

nix-community/bun2nix

Generate a nix expression to build bun packages - similar to node2nix or yarn2nix [maintainer=@baileylu121]

Nix · Elixir · Rust★ 165↓ 32.7K/moSep 14, 2026

MITSep 14, 2026 · metrics 2.10.0

crates.io · npm

83Excellenthealth index

Dicklesworthstone/asupersync

Async runtime for Rust where correctness is structural: region-owned tasks, cancel-correct protocols, capability-gated effects, and deterministic replay testing

Rust★ 285↓ 252K/moOct 20, 2026

Custom licenseOct 20, 2026 · metrics 2.10.0

npm

83Excellenthealth index

jaredwray/hashery

Browser / Nodejs Compatible Object Hashing

TypeScript★ 6↓ 44.1M/moSep 23, 2026

MITSep 23, 2026 · metrics 2.10.0

PyPI · npm · crates.io

83Excellenthealth index

statecrafting/spec-spine

A typed, hash-verifiable ledger of who-owns-what, sitting underneath a codebase so that many agents (or people) can work in parallel without trampling each other.

Rust★ 12↓ 6,280/moOct 12, 2026

Apache-2.0Oct 12, 2026 · metrics 2.10.0

crates.io · PyPI

81Excellenthealth index

Sollimann/bonsai

Rust implementation of behavior trees for deterministic AI (now with Python bindings)

Rust · Python★ 1,029↓ 15.8K/moAug 23, 2026

MITAug 23, 2026 · metrics 2.10.0

PyPI · npm · Go +1

81Excellenthealth index

licenselynx/licenselynx

Which license did they mean?

Python · Java · Go★ 19↓ 368/moSep 5, 2026

BSD-3-ClauseSep 5, 2026 · metrics 2.10.0

npm

81Excellenthealth index

manojmallick/sigmap

~97% token reduction for AI coding sessions — zero deps, 33 languages, MCP server

JavaScript★ 636↓ 4,235/moSep 11, 2026

MITSep 11, 2026 · metrics 2.10.0

80Excellenthealth index

franchoy/coldkeep

Coldkeep is a correctness-first, content-addressed cold-storage engine with deterministic restore, integrity verification, safe garbage collection, deduplication, transform-aware packed storage, and a reusable engine/catalog core. v1.x is complete and frozen; v2.x is planned for local-first productization.

Go · Python★ 0Oct 19, 2026

Apache-2.0Oct 19, 2026 · metrics 2.10.0

crates.io

80Excellenthealth index

tokio-rs/turmoil

Add hardship to your tests

Rust★ 1,262↓ 179.2K/moSep 22, 2026

MITSep 22, 2026 · metrics 2.10.0

npm

78Goodhealth index

cossistantcom/cossistant

Open-source, customer support platform with fully customizable AI support agents for developers / startups shipping SaaS.

TypeScript★ 720↓ 202.9K/moSep 15, 2026

AGPL-3.0Sep 15, 2026 · metrics 2.10.0

crates.io · npm · PyPI

77Goodhealth index

ThousandBirdsInc/chidori

The agent framework where every run is durable, replayable, and resumable by default.

Rust★ 1,364↓ 1,397/moSep 12, 2026

Apache-2.0Sep 12, 2026 · metrics 2.10.0

crates.io

77Goodhealth index

durable-workflow/sdk-rust

Rust client and worker SDK for Durable Workflow Cloud and self-hosted Server

Rust★ 2↓ 2,371/moOct 18, 2026

MITOct 18, 2026 · metrics 2.10.0

npm · crates.io

77Goodhealth index

ewanc26/pkgs

my pkgs monorepo

TypeScript · Svelte★ 9↓ 1,984/moSep 20, 2026

AGPL-3.0Sep 20, 2026 · metrics 2.10.0

PyPI

77Goodhealth index

rlippmann/context-compiler

Deterministic state engine for managing conversation state and constraints in LLM applications.

Python★ 2↓ 5,202/moSep 18, 2026

Apache-2.0Sep 18, 2026 · metrics 2.10.0

PyPI

77Goodhealth index

russalo/file-observer

Deterministic file observation for pipelines — one read-only pass over a directory emits a reproducible JSON manifest of every file's type, metadata, structure, and provenance.

Python★ 2Sep 10, 2026

Custom licenseSep 10, 2026 · metrics 2.10.0

crates.io · npm · Go

77Goodhealth index

vexil-lang/vexil

Typed schema language and toolchain for compact, deterministic binary protocols, with code generation for Rust, TypeScript, Go, and Python.

Rust · Python★ 5↓ 231/moSep 19, 2026

Apache-2.0Sep 19, 2026 · metrics 2.10.0

crates.io

75Goodhealth index

Dicklesworthstone/franken_networkx

Memory-safe clean-room Rust reimplementation of NetworkX with deterministic graph semantics, differential conformance, and RaptorQ-backed durability.

Python · Rust★ 26↓ 9,598/moOct 4, 2026

Custom licenseOct 4, 2026 · metrics 2.10.0

npm

73Goodhealth index

Alain00/blobatar

No repository description published.

TypeScript★ 1,426↓ 1.3M/moOct 3, 2026

MITOct 3, 2026 · metrics 2.10.0

PyPI · crates.io

73Goodhealth index

fullbleed-engine/fullbleed-official

Deterministic HTML/CSS to PDF for Python, Rust, Node.js, C# and browsers. MIT licensed. Reports, invoices, previews and compiled variable-data documents.

Rust · Python★ 58↓ 6,905/moOct 9, 2026

MITOct 9, 2026 · metrics 2.10.0

npm

71Goodhealth index

MasterPlayspots/motionspec

Verifies and compiles reduced-motion-safe, on-budget UI animation for AI-generated web apps: schema-validated specs to deterministic vanilla-GSAP + CSS, WCAG 2.2.2 / 2.3.3 checks. MIT core, keyless MCP server, free web check at motionspec.dev/motion-check. Not Motion.dev/Framer Motion, not the Android/iOS MotionSpec class, not a video generator.

JavaScript★ 0↓ 796/moSep 9, 2026

MITSep 9, 2026 · metrics 2.10.0

PyPI

71Goodhealth index

rapiddweller/archkeel

Archkeel checks architecture boundaries and declared changes in AI-assisted code.

Python · JavaScript★ 8↓ 2,098/moOct 9, 2026

MITOct 9, 2026 · metrics 2.10.0

npm

69Goodhealth index

Kikobeats/json-stringify-deterministic

Deterministic JSON.stringify with sorted keys for consistent hashes and stable cache keys.

JavaScript★ 41↓ 1.3M/moSep 15, 2026

MITSep 15, 2026 · metrics 2.10.0

PyPI

69Goodhealth index

WilliamSmithEdward/pyOpenVBA

Pure-Python reader/writer for VBA macros embedded in Excel / PowerPoint / Word files. Zero dependencies, deterministic round-trip, safe on protected and signed projects.

Python★ 43↓ 11.3K/moSep 15, 2026

MITSep 15, 2026 · metrics 2.10.0

npm

69Goodhealth index

izagood/avcs

Agentic Version Control System — an AI-native VCS where intent, session, operation, evidence and decision are first-class objects and code is a materialized projection of an operation graph.

TypeScript★ 1↓ 9,792/moSep 17, 2026

Apache-2.0Sep 17, 2026 · metrics 2.10.0

npm

67Goodhealth index