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The open-source CodeSignal alternative

CoderScreen is the open-source alternative to CodeSignal, offering full transparency, customization, and community-driven development for technical assessments.

Why teams choose CoderScreen over CodeSignal

Discover why engineering teams are making the switch to CoderScreen for their technical interviews.

Transparent Pricing

No sales calls required. See our pricing upfront and start immediately. CodeSignal requires enterprise contracts with hidden costs.

Live Interview Support

CodeSignal focuses on automated assessments. CoderScreen excels at live, collaborative technical interviews.

Real-time Collaboration

Watch candidates code in real-time, provide hints, and collaborate on solutions. True pair programming experience.

Open Source

Full transparency into how the platform works. No black-box algorithms or opaque scoring systems.

Flexible Problem Solving

Create custom challenges tailored to your tech stack. Not limited to standardized question banks.

System Design Ready

Built-in whiteboard for architecture discussions. Evaluate senior candidates on real-world design problems.

Assess Candidates the Way They Actually Work

From automated screening to live pair programming, evaluate real skills instead of interview performance.

Screening

Screen Smarter, Not Harder

Stop wasting weeks on phone screens. Send candidates a real coding challenge, get back scored results, and know exactly who to move forward with.

  • Automated scoringGet instant, structured results for every submission
  • Real-world tasksTest practical skills instead of whiteboard trivia
  • Candidate-friendlyA clean experience that respects their time
  • Anti-cheatingBuilt-in activity monitoring and integrity checks
Junior Backend Developer5 candidates
Candidate
Score
Time
Status
Linus TorvaldsLinus Torvalds
Progress Circle
96
28m
Pass
Sam AltmanSam Altman
Progress Circle
71
47m
Fail
Andrej KarpathyAndrej Karpathy
Progress Circle
92
31m
Pass
Steve JobsSteve Jobs
Progress Circle
89
35m
Pass
Elon MuskElon Musk
Progress Circle
64
52m
Fail
Live Interview

Interview Like You Pair Program

Forget awkward screen-shares and clunky setups. Run live coding sessions where you and the candidate collaborate in the same editor, run code together, and actually see how they think.

  • Multiplayer editorWrite code together with shared cursors
  • 20+ languagesTypeScript, Python, Rust, Go, and more
  • Live outputRun code and see results in real time
  • Session recordingReplay any interview and share it with your team
JavaScript2 participants
Live
1// Two Sum - find indices that add up to target
2function twoSum(nums, target) {
3const map = new Map();You
4for (let i = 0; i < nums.length; i++) {{}
5const complement = target - nums[i];
6if (map.has(complement))Candidate
7return [map.get(complement), i];
8map.set(nums[i], i);
9}
10return [];
11}

Compare CoderScreen to CodeSignal

See how CoderScreen compares to CodeSignal across key features and capabilities.

Features

CoderScreen

CodeSignal

Open Source
Multiple Languages
Live Collaboration
AI Integration
Collaborative Whiteboard
System Design Tools
Modern Interface
Real-time Coding
Interview Recording

Transparent pricing vs. hidden costs

While CodeSignal requires a sales call for pricing, CoderScreen offers transparent, upfront pricing with more features

CoderScreen

$350/month
Live interview platform
System design capabilities
AI-powered insights
Flexible problem solving
Real-time collaboration
Interview playback
Transparent pricing

CodeSignal

Enterprise Contract
Technical assessments only
Automated scoring
Standardized questions
Anti-cheating measures
No live collaboration
Basic reporting
Hidden pricing structure

Built for Technical Depth

Every tool your team needs to run rigorous, candidate-friendly technical interviews.

JavaScript2 participants
Live
1// Two Sum - find indices that add up to target
2function twoSum(nums, target) {
3const map = new Map();You
4for (let i = 0; i < nums.length; i++) {{}
5const complement = target - nums[i];
6if (map.has(complement))Candidate
7return [map.get(complement), i];
8map.set(nums[i], i);
9}
10return [];
11}

Real-Time Collaborative Editor

Code together with multiplayer cursors, live execution, and 20+ language support.

You
How do I handle the edge case when the input array is empty?
AI
Add an early return guard at the top of the function:
if (!nums || nums.length < 2) {
return [];
}

Built-in AI Assistant

Evaluate how candidates prompt, iterate, and integrate AI into real workflows.

System Design

System Design Canvas

Sketch architecture diagrams, data flows, and system components together in real time.

Frequently asked questions about CodeSignal

Common questions when comparing CoderScreen to CodeSignal

Start interviewing the right way

Set up your first coding interview in minutes. No credit card required.