O Overleaf (Digital Science) · LaTeX & typesetting
In-depth entry Collaborative online LaTeX editor with real-time co-editing, templates and reference-manager sync, available as a hosted service and an AGPL self-hosted edition
AGPL-3.0-only Freemium Paid Self-hosted Nov 2, 2026S SymPy Development Team · Mathematical & statistical computing
Pure-Python computer algebra system for symbolic algebra, calculus, equation solving, matrices, physics modules, code generation and LaTeX output
BSD-3-Clause Free Open source Local Nov 2, 2026Z Corporation for Digital Scholarship · Citation management
In-depth entry Free, open-source reference manager with browser connectors, word-processor plugins, a PDF reader, group libraries and optional paid file storage
AGPL-3.0-only Free Open source Local Nov 2, 2026