vacuum vs Thymian

vacuum7.9Visit TThymian7.5Visit

Higher score vacuum #4 in API Linting Tools 7.9/10 Open source ✓ 0 of 5 features Visit vacuum

vs

T Thymian #7 in API Linting Tools 7.5/10 Free plan Free plan✓ 3 of 5 features Visit Thymian

• vacuum fits best

  Teams wanting broad API linting and reporting

• Thymian fits best

  Teams combining OpenAPI linting with live traffic analysis

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Side by side

Feature	vacuum 7.9/10 Visit ↗	TThymian 7.5/10 Visit ↗
At a glance
Editor score	7.9	7.5
Ranking	#4 in API Linting Tools	#7 in API Linting Tools
Best for	Teams wanting broad API linting and reporting	Teams combining OpenAPI linting with live traffic analysis
Pricing model	Free	Free
Starting price	Open source	Free plan
Free plan	Not checked yet	✓ (best)
Free trial	—	—
Deployment	Cloud, Self-hosted	Self-hosted
Support	Community, Docs	Email, Community, Docs
Built for	Small business, Mid-market, Enterprise	Solo, Small business, Mid-market, Enterprise
Features vacuum 0/5 · Thymian 3/5
OpenAPI linting	Not checked yet	✓ (best)
AsyncAPI linting	Not checked yet	Not checked yet
GraphQL schema linting	Not checked yet	Not checked yet
Custom rules	Not checked yet	✓ (best)
CI integration	Not checked yet	✓ (best)
Our review
Pros	Lints OpenAPI, AsyncAPI 3 and JSON Schema documents Supports Spectral-compatible rulesets and language-server integration Adds dashboards, offline HTML reports and CI/CD workflows	Applies rules to OpenAPI specs, live endpoints, and recorded HTTP traffic Supports custom rulesets, overrides, and remote plugins over WebSockets CLI supports CI/CD automation and structured findings for investigation
Cons	Primarily a CLI and Go library, not a hosted API design workspace Requires teams to integrate it into local development or pipelines Support channels are community and documentation	Command-line workflow may not suit teams seeking a graphical interface Self-hosted deployment puts operation and upkeep with the team AGPL v3 licensing may not fit every organization's software policies
Our verdict	vacuum is an open-source command-line tool and Go library for developers and API teams that want automated quality checks on API specifications. Its scope spans OpenAPI, AsyncAPI 3 and JSON Schema, making it a fit for teams working across… Read the review →	Thymian is an open-source command-line tool for API governance and HTTP conformance. It is aimed at teams that want to apply consistent rules across API specifications and HTTP behavior, from individual developers through enterprise teams.… Read the review →

Strengths and trade-offs

• vacuum — where it wins

  • Lints OpenAPI, AsyncAPI 3 and JSON Schema documents
  • Supports Spectral-compatible rulesets and language-server integration
  • Adds dashboards, offline HTML reports and CI/CD workflows

  Where it doesn't

  • Primarily a CLI and Go library, not a hosted API design workspace
  • Requires teams to integrate it into local development or pipelines
  • Support channels are community and documentation

• Thymian — where it wins

  • Applies rules to OpenAPI specs, live endpoints, and recorded HTTP traffic
  • Supports custom rulesets, overrides, and remote plugins over WebSockets
  • CLI supports CI/CD automation and structured findings for investigation

  Where it doesn't

  • Command-line workflow may not suit teams seeking a graphical interface
  • Self-hosted deployment puts operation and upkeep with the team
  • AGPL v3 licensing may not fit every organization's software policies

• vacuum7.9/10 · Open source

  A broad, local-first API linting toolkit with reporting and CI support.

  Visit vacuumFull verdict →
• TThymian7.5/10 · Free plan

  An open-source CLI for applying shared rules across OpenAPI specs and HTTP traffic.

  Visit ThymianFull verdict →