C ClickHouse, Inc. · Analytical engines & OLAP
In-depth entry Open-source columnar OLAP database server for fast aggregations over billions of rows, with MergeTree storage, SQL and a managed ClickHouse Cloud
Apache-2.0 Open source Free Local Self-hosted Nov 2, 2026L BerriAI · Prompting, evaluation & observability
In-depth entry Open-source Python SDK and self-hosted AI gateway that calls 100+ LLM providers in the OpenAI format, with routing, fallbacks, virtual keys, budgets, spend tracking and logging callbacks
MIT Open source Free Local Self-hosted Nov 2, 2026T Tiger Data (formerly Timescale) · Relational databases
PostgreSQL extension for time-series data adding hypertables, compression and continuous aggregates, from the company now named Tiger Data
Apache-2.0 AND LicenseRef-Timescale-License Open source Free Self-hosted Nov 2, 2026