Codility
HackerRank
CodeSignal
iMocha
TestGorilla
HackerEarth
mettl
DevSkiller
StackRender
DrawSQL
DBDiagram.io
ChartDB
Azimutt
Sqemo
Vertabelo
DbSchema
The Codility platform includes:
CodeCheck - Design role-specific remote skills assessments to screen your technical candidates before moving them to the interview stage.
CodeLive - Host technical remote or onsite interviews via our shared editor using a range of templates and whiteboards.
CodeEvent - Assess thousands of candidates at a time via technical recruiting events and find the best talent faster.
StackRender is a visual database schema editor that helps developers design, evolve, and deploy databases faster.
Instead of manually writing migration scripts or managing schema changes through ORMs, StackRender lets you modify your database visually using ER diagrams and automatically generates the required SQL migrations. This makes schema evolution safer, faster, and easier to review.
Supporting PostgreSQL, MySQL, MariaDB, SQL Server, SQLite, and Oracle, StackRender streamlines the entire database development workflow—from initial schema design to ongoing migrations as your application grows.
Codility StackRenderStackRender's answer:
StackRender combines visual database design, AI-assisted schema creation, and automatic SQL migration generation in a single platform.
Unlike traditional database modeling tools that stop at documentation, StackRender treats the database schema as the source of truth. Every change made in the ER diagram is tracked and can be converted into production-ready SQL migrations, helping teams move seamlessly from design to deployment.
StackRender's answer:
Most database design tools focus on modeling, while migration tools focus on deployment. StackRender bridges both worlds.
Instead of designing a schema in one tool and manually implementing changes elsewhere, developers can design visually, track schema evolution, and generate SQL migrations from the same workspace.
StackRender helps teams:
StackRender's answer:
StackRender is built for software developers, startups, engineering teams, and mid-sized companies that build database-driven applications.
Typical users include:
It is especially useful for teams that frequently evolve their database schema and want a more visual and automated workflow.
StackRender's answer:
StackRender was born from a common frustration experienced by many developers: database design and database implementation are often disconnected.
Designing a schema is usually easy, but maintaining migrations, tracking schema changes, and keeping databases synchronized becomes increasingly complex as projects grow. We wanted a workflow where database design could directly drive implementation.
That idea led to StackRender—a platform where developers can design databases visually, track schema evolution automatically, and generate production-ready migrations from their changes.
StackRender's answer:
StackRender is built using modern web technologies with a strong focus on performance and developer experience.
Core technologies include:
The platform is designed to support scalable cloud deployments while also offering self-hosted flexibility.
StackRender's answer:
StackRender is currently used by independent developers, startups, and early-stage engineering teams building database-driven applications.
As a growing product, we are focused on working closely with our users, gathering feedback, and continuously improving the platform. We do not publicly disclose customer information at this time.
Based on our record, Codility seems to be more popular. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
- Technical skills: have they got the walk to match the talk? Programming languages on a resume mean little if candidates are unable to demonstrate their hard coding skills. You can test these skills with technical skill tests, such as the ones created by Codility or HackerRank. - Source: dev.to / over 2 years ago
Codility : Verify and improve coding skills. - Source: dev.to / over 5 years ago
HackerRank - HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
DrawSQL - Easy database diagrams. Create, visualize and collaborate on your database entity relationship diagrams.
CodeSignal - CodeSignal is the leading assessment platform for technical hiring.
DBDiagram.io - Free database diagrams designer for analysts & developers 🛠
iMocha - Make intelligent talent decisions.
ChartDB - Visualize your DB via one-single query. Free and open source, database design editor.
