DL Delta Lake project (Linux Foundation; created by Databricks) · Data catalogs & formats
Open table format with a transaction log over Parquet files, created by Databricks and hosted by the Linux Foundation, with Spark, Rust and Python implementations
Apache-2.0 Open source Free Local Self-hosted Nov 2, 2026D Deno Land · Programming languages & runtimes
Secure-by-default JavaScript and TypeScript runtime from Deno Land with web-standard APIs, built-in tooling and an optional hosted Deploy service
MIT Open source Free Local Self-hosted Nov 2, 2026M Meili SAS · Vector databases
Rust search engine for application search-as-you-type with typo tolerance, faceting and hybrid semantic search; MIT core plus BSL enterprise parts
MIT AND BUSL-1.1 Open source Free Self-hosted Nov 2, 2026R Rust Foundation / Rust Project · Programming languages & runtimes
Compiled systems programming language with ownership-based memory safety, the Cargo build tool and no garbage collector
MIT OR Apache-2.0 Open source Free Local Self-hosted Nov 2, 2026