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Bruno

Bruno Software · API development & tooling

Open-source, offline-first API client that stores collections as plain-text .bru files in a Git repository, with a CLI for running requests in CI

MITOpen sourceFreeLocalNov 2, 2026

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

OpenAlex

OurResearch · Literature discovery & review

In-depth entry

Open catalog of the global research system: works, authors, sources, institutions and topics under CC0, served by a REST API, web app and S3 snapshot

Open sourceFreeFreemiumBroken

Qdrant

Qdrant Solutions GmbH · Vector databases

In-depth entry

Open-source vector search engine written in Rust with filterable HNSW indexes, sparse and multi-vector support, REST/gRPC APIs and a managed cloud

Apache-2.0Open sourceFreemiumLocalSelf-hostedNov 2, 2026

Supabase

Supabase Inc. · Relational databases

Open-source backend platform built around a dedicated PostgreSQL database with auto-generated APIs, authentication, file storage, realtime subscriptions and edge functions

Apache-2.0Open sourceFreemiumSelf-hostedNov 2, 2026

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