Directory

Open-source computational notebook ecosystem: the .ipynb format, kernels for Python, R and Julia, JupyterLab and Notebook interfaces and JupyterHub

Pull-based metrics monitoring system and time-series database with the PromQL query language, service discovery and the Alertmanager component

Open-source, local-first CLI and library for evaluating prompts, models, RAG pipelines and agents, with automated red teaming and CI integration

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

Algorithmic trading platform built on the open-source LEAN engine, with cloud backtesting, research notebooks and brokerage-connected live trading

Open-source message broker in Erlang supporting AMQP 0-9-1 and 1.0, MQTT, STOMP and Streams, with routing, acknowledgements and quorum queues

Open-source Python framework for distributing tasks, actors and ML workloads across a cluster, with libraries for data processing, training, tuning, serving and reinforcement learning

Command-line program to sync, copy, mount and serve files across dozens of cloud storage providers and protocols, with optional client-side encryption

Posit's open-source integrated development environment for R, with console, editor, plots, environment panes, Quarto/R Markdown authoring and Python via reticulate

Static analysis engine that matches code patterns written in the target language's own syntax, with an LGPL community edition and a commercial AppSec platform

Channel-based team messaging platform from Salesforce with threads, huddles, canvases, workflow automation and an extensive bot and app API

Pure-Python computer algebra system for symbolic algebra, calculus, equation solving, matrices, physics modules, code generation and LaTeX output

Salesforce's visual analytics platform: Tableau Desktop authoring (now with a free edition), Tableau Cloud and Server for sharing, and Tableau Next for CRM analytics

WireGuard-based mesh overlay network with a hosted coordination service, identity-provider login, access policies, MagicDNS and features such as Tailscale SSH, Serve and Funnel

Infrastructure-as-code tool that provisions cloud and SaaS resources from HCL configurations through a plan-and-apply workflow, licensed under BSL 1.1

Apple's beta distribution service for sharing pre-release iOS, macOS, watchOS, tvOS and visionOS builds with internal and external testers through App Store Connect

Cross-platform task manager from Doist with natural-language scheduling, projects, labels, filters, shared projects and a public REST API

Cloud-native reverse proxy and ingress controller that discovers routes from Docker, Kubernetes and other providers and automates TLS through ACME

Markup-based typesetting system with an Apache-2.0 compiler written in Rust and a collaborative web app, positioned as a faster, simpler alternative to LaTeX

Open-source framework for fine-tuning and running LLMs with reduced memory, covering LoRA, QLoRA, full fine-tuning and RL, GGUF export, Dynamic quantizations and a local Studio/Desktop UI

Self-hosted uptime monitor with HTTP, TCP, DNS, ping and keyword checks, many notification channels and public status pages

Free, extensible code editor from Microsoft with a large extension marketplace, integrated terminal, debugging, remote development and built-in AI assistance

Wolfram Research's proprietary technical computing system built on the Wolfram Language, with notebooks, symbolic and numeric computation, visualization, machine learning and curated data

Video meetings and webinar platform, now packaged as Zoom Workplace with team chat, phone, whiteboard, AI Companion and developer APIs and SDKs