Offers an expansive infinite canvas for team brainstorming and visual workshops, but lacks Eraser's code-to-diagram automation.
#1Eraser records 534,396 monthly visits with -23.6% month-over-month growth and Freemium, Paid, Contact for Pricing pricing. SurfSense records 61,868 monthly visits with -17.4% growth and Freemium, Free Trial, Contact for Pricing pricing.
A private, offline notebook that turns your own sources into reports, decks and briefings
| Dimension / Metric | ||
|---|---|---|
| Official Domain | eraser.io | surfsense.com |
| Pricing Model | Freemium, Paid, Contact for Pricing | Freemium, Free Trial, Contact for Pricing |
| Monthly Visits | 534.4K (534,396) | 61.87K (61,868) |
| MoM Traffic Delta |
| -164.9K (-23.6%) |
| -13.08K (-17.4%) |
| Primary Market & Share | 🇮🇳 India (39.6%) | 🇺🇸 United States (23.3%) |
|---|
| Direct Visits / mo | 267.66K | 21K |
|---|
| User Rating | 4.6 | 4.5 |
|---|
| Supported Platforms | Website | Website |
|---|
AI diagrams and technical design docs built from your code and systems
Generate architecture diagrams, flowcharts, sequence diagrams, and BPMN from a text prompt, code, Terraform, or an uploaded PDF, Word, Excel, PowerPoint, Draw.io, or Visio file.
Build interactive maps that sync with cloud accounts, repositories, and internal catalogs so the picture stays close to the real environment, with drill-down from org level to a single container.
Paste code or connect private and public Git repositories, Confluence, Notion, VS Code, and GitHub to keep diagrams grounded in actual implementation.
Run the agent toolkit in your own infrastructure under an MIT license and let MCP-compatible clients create, search, update, and export diagrams with OAuth or API tokens.
A private, offline notebook that turns your own sources into reports, decks and briefings
Install a normal desktop app on Windows, macOS or Linux and run it with no account. With a local model you can pull the network cable and keep querying your indexed sources, since nothing is sent to a vendor.
Choose a bundled local Qwen or Gemma model at first launch, or paste a key for OpenAI, Anthropic or any OpenAI-compatible endpoint. The model is a setting rather than a fixed vendor choice.
Turn one set of sources into slide decks, reports, briefing notes, podcasts, mind maps, flashcards, quizzes, Markdown, Word, PDF, HTML and spreadsheet outputs — generated and stored locally.
Optional plugins pull research from Google Search, Reddit, YouTube, Instagram, TikTok, Google Maps, Amazon, Walmart, Indeed and the open web, and anyone can register their own MCP server.
Offers an expansive infinite canvas for team brainstorming and visual workshops, but lacks Eraser's code-to-diagram automation.
#1Chat with any PDF, video, or website and get cited answers in seconds

SpecialistAutomatically embeds visual diagrams directly inside text documents, though it lacks Eraser's specialized cloud architecture focus.
#3Free / Open-sourceOwn your intelligence: a private AI assistant that runs entirely on your machine


AI agents that turn your own documents into summaries, mind maps and reports
Provides extensive drag-and-drop shapes and templates for general diagrams, but weaker automated code-to-diagram capabilities than Eraser.
Combines team whiteboarding, documentation, and diagramming in one platform, but less tailored for automated codebase architecture.

Free / Open-sourceOpen-source, privacy-first AI meeting assistant that runs locally

Chat with PDFs, summarize documents and draft content in one AI workspace
Private AI that answers from your own documents, on Mac and Windows
SpecialistAI knowledge base for your documents

Free / Open-sourceOpen-source tool specifically tailored for database schema visualization and ER diagrams, but lacks general system documentation features.
Offers an expansive infinite canvas for team brainstorming and visual workshops, but lacks Eraser's code-to-diagram automation.
SpecialistAutomatically embeds visual diagrams directly inside text documents, though it lacks Eraser's specialized cloud architecture focus.
Free / Open-sourceOwn your intelligence: a private AI assistant that runs entirely on your machine
AI agents that turn your own documents into summaries, mind maps and reports
Provides extensive drag-and-drop shapes and templates for general diagrams, but weaker automated code-to-diagram capabilities than Eraser.
Combines team whiteboarding, documentation, and diagramming in one platform, but less tailored for automated codebase architecture.
Free / Open-sourceOpen-source, privacy-first AI meeting assistant that runs locally
Chat with PDFs, summarize documents and draft content in one AI workspace
Private AI that answers from your own documents, on Mac and Windows
Free / Open-sourceOpen-source tool specifically tailored for database schema visualization and ER diagrams, but lacks general system documentation features.