tlaplus/tlaplus

Health v2 · maintenance only

Flags: prerelease_only

Adoption not part of the score

3018 stars · 263 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

The official TLA+ tools repository containing TLC, a model checker for TLA+ specifications, plus the SANY parser, PlusCal translator, REPL, and the Eclipse-based Toolbox IDE. TLA+ is a formal specification language for modeling concurrent and distributed systems to find design errors before implementation.

Use cases

• model check a distributed system design for liveness and safety violations
• verify concurrent algorithms before writing code
• formally specify a protocol and explore its state space
• translate PlusCal algorithms to TLA+ specifications
• find race conditions and deadlocks in a system design

When to choose

• you need to rigorously verify the design of concurrent or distributed systems
• you want to catch fundamental design errors before implementation
• you are modeling safety-critical systems where correctness matters
• you want a mature, actively maintained model checker backed by the TLA+ Foundation

When to avoid

• you want unit testing of existing code rather than design-level verification
• your team cannot invest in learning a mathematical specification language
• you need lightweight property testing of implementations instead of exhaustive model checking
• you require a GUI IDE - the Toolbox is unmaintained; prefer the VS Code extension

Facets

application · maturity active

testing cli developer-tools simulation parser interpreter developer-tools microservices programming-languages jvm cross-platform cli tla-plus model-checking formal-verification formal-methods specification-language pluscal concurrency distributed-systems ide algorithms verification

Member repositories

For agents

markdown · JSON · MCP: product_card(name="tlaplus/tlaplus")