Capacities records 339,396 monthly visits with +5.7% month-over-month growth and Freemium, Paid pricing. Open WebUI records 804,534 monthly visits with -2.8% growth and Freemium pricing.
A studio for your mind: object-based notes that stay connected
Self-hosted AI workspace for local and cloud models
| Dimension / Metric | | |
|---|---|---|
| Official Domain | capacities.io | openwebui.com |
| Pricing Model | Freemium, Paid | Freemium |
| Monthly Visits | 339.4K (339,396) | 804.53K (804,534) |
| MoM Traffic Delta | +18.16K (+5.7%) | -23.01K (-2.8%) |
| Primary Market & Share | 🇺🇸 United States (29.5%) | 🇺🇸 United States (24.5%) |
| Direct Visits / mo | 249.6K | 299.84K |
| User Rating | 4.5 | 4.4 |
| Supported Platforms | Website | Website |
A studio for your mind: object-based notes that stay connected
Model people, books, projects and meetings as typed objects with their own properties, instead of forcing them into folders.
See every link to a note at a glance, and let Capacities surface unlinked mentions where you already wrote about the same thing.
Capture thoughts without deciding where they belong first, then link and refine them later.
On paid plans, an AI assistant works alongside your notes, and image, PDF and weblink analysis turns outside material into usable content.
Self-hosted AI workspace for local and cloud models
Connect local runtimes like Ollama alongside OpenAI-compatible and Anthropic APIs, and switch between them inside one interface.
RAG over your own documents, web search and citation-aware answers come standard, so responses are grounded in real sources.
Extend the platform with Python code to add custom tooling, preprocessing, and multi-step pipelines, then share them with others.
SSO, RBAC, audit logs, data residency, and on-premises, hybrid or air-gapped deployment for organisations with strict requirements.
Free / Open-sourceFunctions primarily as a lightweight CLI runtime for local models rather than a full-featured chat interface.
Free / Open-sourceFunctions primarily as a lightweight CLI runtime for local models rather than a full-featured chat interface.
SpecialistOpen-source workflow automation built for AI agents and technical teams
SpecialistOpen-source workflow automation built for AI agents and technical teams
SpecialistA free, open-source personal AI agent that learns your projects and works across every messaging app.
SpecialistA free, open-source personal AI agent that learns your projects and works across every messaging app.
SpecialistOpen-source personal AI assistant that runs on your own machine and works from chat apps
SpecialistOpen-source personal AI assistant that runs on your own machine and works from chat apps
SpecialistSpecializes in visual workflow building and RAG pipelines rather than serving purely as a chat interface.
SpecialistSpecializes in visual workflow building and RAG pipelines rather than serving purely as a chat interface.
Delivers a cleaner document editing experience with beautiful typography, but lacks network graph views and typed object modeling.
Delivers a cleaner document editing experience with beautiful typography, but lacks network graph views and typed object modeling.
Free / Open-sourceFocuses on collaborative team AI workspaces and plugins, but shares similar open-source architectural goals.
SpecialistFocuses heavily on privacy-first document chat and local RAG pipelines, but offers fewer general-purpose chat UI features.
SpecialistFocuses heavily on privacy-first document chat and local RAG pipelines, but offers fewer general-purpose chat UI features.
Free / Open-sourceOffers robust multi-provider support and advanced user permission management, but has a slightly different configuration setup.
Free / Open-sourceOffers robust multi-provider support and advanced user permission management, but has a slightly different configuration setup.
Free / Open-sourceDelivers a desktop-native application for running local models offline easily, but lacks Open WebUI's server-centric multi-user features.
Free / Open-sourceDelivers a desktop-native application for running local models offline easily, but lacks Open WebUI's server-centric multi-user features.
SpecialistOpen-source AI automation that unifies agents, flows and 770+ app integrations
SpecialistOpen-source AI automation that unifies agents, flows and 770+ app integrations
SpecialistOffline visual note-taking on an infinite canvas
SpecialistOffline visual note-taking on an infinite canvas
