ScaleDojo
Free plan · From ≈ $42/yrActively maintained
≈ 84visits/mo
Emerging · estimate, read Oct 18, 2026
- For
- Engineers preparing for system design interviews who want hands-on practice building architectures
- Price
- Free plan · From ≈ $42/yr₹3,999 · pricing page, read Oct 19, 2026Trial & discounts: student discount · 7-day money back
- Activity
- Actively maintainedrelease 4 weeks ago · site updated 3 weeks ago
- Company
- Scaling Future Private Limited · Domain since 2026site footer · domain registered
- Used for
- design a URL shortener with load balancers and caches
- model database schemas on an entity-relationship canvas
- write SQL queries to investigate data anomalies
- Used more than 63% of the 1,915 tools on its shelfINITE Atlas →
- Publishes llms.txt, a file written for AI assistantsscaledojo.dev ↗
- Launched on Product Hunt on May 27, 2026Product Hunt ↗
- Run byScaling Future Private Limitedsite footer ↗
- Security contactsecurity.txt
These are ScaleDojo's own statements, read from its pages. We did not audit them. A line that is missing was not found on the pages we read; it does not mean the practice is absent.
Figure and bar: visits/mo, estimate · year: online since
- #1
Microsoft AI
Provides foundational AI models for transcription, reasoning, code generation, image creation, and speech synthesis.
219kActive - #2
Devart Software
Database management tools, data connectivity drivers, and no-code ETL platform for SQL Server, MySQL, Oracle, and PostgreSQL.
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Retool
Builds internal tools by placing UI components on databases and APIs, with JavaScript queries, workflows and self-hosting.
38.5kActiveFrom $10/user/mo2017 - #4
SurrealDB
Stores documents, graphs, relational tables and vectors in one database engine queried with SurrealQL, running embedded, self-hosted or in the cloud.
3.5kActiveFrom $0.02 per use2015 - #5
Reka AIMCP · open
Builds multimodal AI models and infrastructure for processing and generating video, images, and other data types in real time.
2.3kActiveFrom $0.10 per use2022 - #6
Replay.io Agent
Explores web apps, writes and runs tests, records sessions, and files bug reports with root cause analysis.
532ActiveFrom $17/mo
Not it? Say what you need
betaThree tools from the Atlas for the job you describe, each with what fits and what does not.
No notes yet. What do you use ScaleDojo for?
Sign in to leave a noteWhat is ScaleDojo?
Scores engineers' practice system designs, schemas, API specs and ML code in a browser sandbox. It is listed in the Atlas under Developer tools and made by Scaling Future Private Limited.
Who is ScaleDojo for?
Engineers preparing for system design interviews who want hands-on practice building architectures
How much does ScaleDojo cost?
ScaleDojo has a free plan; paid plans start at ≈ $42/yr (₹3,999/yr), per its pricing page on 2026-10-19.
Is ScaleDojo free?
Yes, ScaleDojo has a free plan, per its pricing page on 2026-10-19.
Do people use ScaleDojo?
Emerging: ≈ 84 visits/mo · estimate, 2026-10.
Is ScaleDojo still maintained?
Actively maintained: release 4 weeks ago · site updated 3 weeks ago.
Who owns ScaleDojo?
ScaleDojo is run by Scaling Future Private Limited, per its site footer (2026-10-19).
Does ScaleDojo have a student discount?
Yes, its pricing page names a discount for students (2026-10-19).
What are alternatives to ScaleDojo?
In Developer tools, by use: Microsoft AI, Devart Software, Retool, SurrealDB, Reka AI, Replay.io Agent.
How we read a tool
No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.
- Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
- Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
- Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
- The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.
How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.
How we read every tool → · By INITE Atlas Desk