Lore | Next-Generation Open Source Version Control - Lore Lore: next-generation open source version control (https://lore.org/#) Maintained by Epic Games, Lore is designed for unprecedented scalability of both data and teams. It’s optimized for projects—including games and entertainment—that combine code with large binary assets, and caters for the needs of developers and artists alike. Download Lore (https://github.com/EpicGames/lore/releases) GitHub repo (https://github.com/EpicGames/lore) • Get started with Lore Find us on GitHub (https://github.com/EpicGames/lore) Access and contribute to Lore on the Epic Games GitHub. Read the docs (https://epicgames.github.io/lore/) Delve into Lore’s ethos and architecture. Join the conversatio n (https://discord.gg/E4SFJKRPbg) Chat with us and our community on Discord. • Overview Easy setup, on-demand scalability Get started in local mode in minutes. Then, scale up as far and as fast as you need. Fast and efficient processes Scale without slowdowns, thanks to shared, reusable data and as-needed downloads. Free branching Quickly and easily create, manage, and sync branches to freely experiment, iterate, and release. History you can trust Confidently track and manage revisions with Lore's verifiable tamper-evident source of truth. Intuitive interface Enjoy complete one-to-one access to the full Lore functionality via the CLI. Full-surface API Extend, customize, and integrate Lore via C/C++, C#, Rust, Go, Python, or JavaScript. • Lore’s architecture Lore is a centralized, content-addressed version control system that represents repository state as Merkle trees and an immutable revision chain, optimized for binary-first storage, deduplication, and sparse/on-demand data hydration at scale. Read the docs (https://epicgames.github.io/lore/)View system design doc (https://epicgames.github.io/lore/explanation/system-design/) Content-addressed storage Repository data is stored and referenced by content hash in a Merkle tree, enabling fast comparisons, integrity checks, and reuse across history and branches. Immutable revision chain A revision's hash signature is derived from its revision state, including parent revision hashes and contained data hashes, forming an immutable chain with cryptographic integrity. Chunked storage for large files Files are stored as reusable chunks with indexed lookup, reducing duplication and enabling efficient updates and transfer for large binary assets. On-demand hydration and sparse workspaces Workspaces can stay lightweight by fetching file data only when needed, so you don't have to download everything up front. Centralized service with caching A service-backed architecture uses caching in front of durable storage to scale throughput for large teams and repositories. Lightweight branches and fast switching Branches are lightweight mutable references, so creating and switching branches is low-overhead without duplication of underlying data. • Lore’s repositories Explore the full collection of Lore repositories on the Epic Games GitHub. Lore Library, Server & CLI (https://github.com/EpicGames/lore) View on GitHub (https://github.com/EpicGames/lore) Javascript SDK (https://github.com/EpicGames/lore-js) View on GitHub (https://github.com/EpicGames/lore-js) Python SDK (https://github.com/EpicGames/lore-python) View on GitHub (https://github.com/EpicGames/lore-python) C# SDK (https://github.com/EpicGames/lore-dotnet) View on GitHub (https://github.com/EpicGames/lore-dotnet) Go SDK (https://github.com/EpicGames/lore-go) View on GitHub (https://github.com/EpicGames/lore-go) Fully open source (https://lore.org/#) At Epic, we believe a truly open ecosystem won’t be built by any one company, but collectively and collaboratively using open standards. That’s why Lore is fully open source and released under an MIT license. Let’s build the version control system of the future in the open, learning from each other’s needs and ideas from the start. Come join us! Get involved (https://github.com/EpicGames/lore) Frequently asked questions What is Lore? Lore is a next-generation open source version control system maintained by Epic Games. Designed for unprecedented scalability—both in terms of data size and the size and distribution of teams and repositories—it is especially optimized for projects that combine code with large binary assets, such as those found in the games and entertainment industries. Easy to set up, scale, and maintain, Lore provides the foundations for teams to build fast, intuitive, and practical collaborative workflows for developers and artists alike. How is Lore licensed? Why open source? How does Lore differ from other version control solutions? What platforms does Lore support, and where can I find the SDKs? How do I get started? Does Lore support file locking? What infrastructure do I need to run a Lore server? How does Lore handle merge conflicts? How do I report a security vulnerability? Is Lore production-ready? Does Lore have a desktop client? Where is Lore already in use at Epic? How can I contribute? Will Lore always be fully open source? What’s on the roadmap? Who maintains Lore?