Hoppscotch
Hoppscotch · API development & tooling
Open-source API client that runs in the browser or as a desktop app, supports REST, GraphQL and realtime protocols, and can be self-hosted for teams
MITOpen sourceFreeLocalSelf-hostedNov 2, 2026
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promptfoo
Promptfoo, Inc. · Prompting, evaluation & observability
Open-source, local-first CLI and library for evaluating prompts, models, RAG pipelines and agents, with automated red teaming and CI integration
MITOpen sourceFreeLocalSelf-hostedBroken
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