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The open-source TestGorilla alternative

CoderScreen is the developer-focused alternative to TestGorilla, offering live coding interviews and real-world technical assessments instead of multiple-choice tests.

Why engineering teams choose CoderScreen over TestGorilla

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

Live Coding Interviews

TestGorilla focuses on pre-recorded assessments. CoderScreen enables real-time pair programming where you can see how developers actually think and code.

Developer-Focused

Built specifically for technical roles. TestGorilla covers everything from sales to accounting. CoderScreen is laser-focused on engineering hiring.

Real Code Execution

Candidates write and run real code in a full development environment. No multiple-choice questions or simulated coding.

System Design Support

Evaluate architecture skills with our collaborative whiteboard. Essential for senior engineering roles that TestGorilla can't assess.

Open Source

Full transparency into how the platform works. Inspect the code and never worry about proprietary assessment algorithms.

Interview Playback

Review every keystroke and decision. Share recordings with team members for collaborative hiring decisions.

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 TestGorilla

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

Features

CoderScreen

TestGorilla

Open Source
Multiple Languages
Live Collaboration
Developer Focused
Collaborative Whiteboard
System Design Tools
Real Code Execution
Real-time Coding
Interview Recording

Specialized for engineering hiring

TestGorilla covers every role generically. CoderScreen is purpose-built for hiring developers.

CoderScreen

$50/month
20 interviews/month
Live coding interviews
System design whiteboard
Interview playback
Custom questions
Real code execution
Developer-focused

TestGorilla

$75/month + per candidate
Unlimited assessments
Pre-recorded tests only
Generic skills tests
Multiple-choice format
400+ test templates
Simulated coding
All job types

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 TestGorilla

Common questions when comparing CoderScreen to TestGorilla

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