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Vellium
Local-first AI workspace for stories, roleplay and tools
Vellium is a free, open-source desktop AI workspace for character chat, multi-character roleplay, long-form writing, RAG, LoreBooks, MCP tools and plugins. Bring your own backend—OpenAI-compatible APIs, OpenRouter, LM Studio, Ollama or KoboldCpp—while chats, characters, projects and knowledge stay in a local SQLite database. Native builds are available for macOS, Windows and Linux.
I built Vellium because existing AI frontends made me choose between expressive character and roleplay workflows, serious long-form writing, and local-model tooling. I wanted one desktop workspace where characters, multi-character scenes, LoreBooks, RAG, branching chat, writing projects, MCP tools and plugins could actually work together.
Vellium is MIT-licensed and provider-agnostic. You can use cloud APIs or local backends such as LM Studio, Ollama and KoboldCpp, while workspace data stays in local SQLite.
This is the first 1.0 release. I’d especially love feedback on onboarding, provider compatibility and the writing and roleplay workflow.
About Vellium on Product Hunt
“Local-first AI workspace for stories, roleplay and tools”
Vellium was submitted on Product Hunt and earned 0 upvotes and 2 comments, placing #14 on the daily leaderboard. Vellium is a free, open-source desktop AI workspace for character chat, multi-character roleplay, long-form writing, RAG, LoreBooks, MCP tools and plugins. Bring your own backend—OpenAI-compatible APIs, OpenRouter, LM Studio, Ollama or KoboldCpp—while chats, characters, projects and knowledge stay in a local SQLite database. Native builds are available for macOS, Windows and Linux.
On the analytics side, Vellium competes within Productivity, Open Source, Artificial Intelligence and GitHub — topics that collectively have 1.2M followers on Product Hunt. The dashboard above tracks how Vellium performed against the three products that launched closest to it on the same day.
Who hunted Vellium?
Vellium was hunted by prplx. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Vellium including community comment highlights and product details, visit the product overview.
prplx