
SpecialistGeneral conversational AI workspace capable of deep reasoning, tutoring, and generating custom study plans.

Astra AI records 7,356,157 monthly visits with +40.3% month-over-month growth and Freemium, Paid pricing. OpenFlowKit records 1,437 monthly visits with -70.3% growth and Free pricing.

The open-source diagramming studio for builders
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | astra-ai.co | openflowkit.com |
| Pricing Model | Freemium, Paid | Free |
| Monthly Visits | 7.36M (7,356,157) | 1.44K (1,437) |
| MoM Traffic Delta |
| +2.11M (+40.3%) |
| -3.41K (-70.3%) |
| Primary Market & Share | 🇻🇳 Vietnam (14.3%) | 🇻🇳 Vietnam (92.4%) |
|---|
| Direct Visits / mo | 2.36M | 614 |
|---|
| User Rating | 4.3 | 4.6 |
|---|
| Supported Platforms | Website | Website |
|---|

Your personal AI tutor for every subject, from notes to exam day.
Upload your notes, slides or past papers, set your exam date and target grade, and Astra assembles a topic-by-topic revision plan built around exactly what you'll be tested on.
Ask by typing, speaking or snapping a photo. The tutor explains concepts at your level, asks follow-up questions and keeps going until the idea actually clicks.
Generate guided lessons, flashcards, quizzes, true/false and smart-text exercises, plus an auto-generated podcast so every learning style is covered.
Practise with realistic oral and timed written mock exams that get graded, so you know where you stand before the real thing.

The open-source diagramming studio for builders
Paste a public GitHub repository and OpenFlowKit reads its files in the browser to draw modules and connections, with every arrow cited to the source line it came from.
29 diagram tools for Claude Code, Codex, Cursor, VS Code, Windsurf or any MCP client, so an agent can draw on the diagram you have open, one undo away.
Write or paste Mermaid, D2 or Structurizr; the text and the canvas remain the same diagram, so you can round-trip between syntax and visuals.
Move from system context to containers to components in linked views that all stay grounded in a single architecture model.

SpecialistGeneral conversational AI workspace capable of deep reasoning, tutoring, and generating custom study plans.

AI study app that converts notes, PDFs, and videos into interactive flashcards and gamified quizzes.
All-in-one student study platform that solves homework problems, predicts exams, and generates custom flashcards.
Free study platform that automatically generates flashcards and practice tests from your lecture notes and files.

SpecialistInteractive learning platform teaching math and science through hands-on visual puzzles and guided AI tutoring.
SpecialistOnline exam preparation platform combining course study materials with an interactive AI study tutor.

AI learning platform that turns course materials into interactive flashcards, quizzes, study notes, and video explainers.

AI learning assistant that automatically converts course materials and lectures into study guides and quizzes.
SpecialistAI-powered exam preparation platform providing mock tests, spaced-repetition flashcards, and audio lesson summaries.
AI diagrams and technical design docs built from your code and systems

AI diagramming, mind mapping and project tools with 50,000+ templates

AI study platform that converts course materials into interactive practice questions and flashcards.
SpecialistGeneral conversational AI workspace capable of deep reasoning, tutoring, and generating custom study plans.
AI study app that converts notes, PDFs, and videos into interactive flashcards and gamified quizzes.
All-in-one student study platform that solves homework problems, predicts exams, and generates custom flashcards.
Free study platform that automatically generates flashcards and practice tests from your lecture notes and files.
SpecialistOnline exam preparation platform combining course study materials with an interactive AI study tutor.
AI learning platform that turns course materials into interactive flashcards, quizzes, study notes, and video explainers.
AI learning assistant that automatically converts course materials and lectures into study guides and quizzes.
SpecialistAI-powered exam preparation platform providing mock tests, spaced-repetition flashcards, and audio lesson summaries.
AI diagrams and technical design docs built from your code and systems
AI diagramming, mind mapping and project tools with 50,000+ templates
AI study platform that converts course materials into interactive practice questions and flashcards.