Alternatives to Celprep

Duolingo is the world's most popular way to learn a language, offering bite-sized, game-like lessons to make language learning fun, free, and accessible.

Online courses and preparation platform for public service exams in Brazil.

An AI-native code editor that helps developers write, understand, and manage code more efficiently.

AI-powered language learning app focused on conversational fluency.

AI coding models and pair programmer built for on-device execution with privacy-first architecture.

Building Devin, the first autonomous software engineer, to act as an exponential collaborator for human engineers.

AI-powered English tutor for personalized language learning and fluency.

An online language learning platform connecting learners with native speakers and expert-created lessons.

Online English language learning platform offering live classes with native teachers, serving millions globally.

Develops language, literacy, and brain-fitness software, best known for its language-learning products.

Online language learning platform offering interactive courses and conversation practice.

AI-powered data analytics platform for educators, simplifying data insights through natural language.

Online education platform providing live lessons and AI-powered tools for students.

AI-powered code acceleration platform that enhances developer productivity and code quality.

Online English education platform connecting Chinese students with Filipino teachers.

88% of organizations use AI. Only 6% capture real business impact. Japi AI closes the gap — measuring workforce readiness, not just completion.

AI-powered coding agents for automated software engineering tasks.

Tabnine is a secure generative AI code assistant that enhances developer efficiency with dependable code completion.

CodeRabbit provides AI-powered code review and agentic change management to help developers understand, prioritize, and secure agent outputs.

Practice all four IELTS skills with full mock tests, band estimates, progress review, and actionable feedback.

AI-powered legal tech startup specializing in contract drafting and review.

AI-powered storytelling and presentation tool that goes beyond traditional slide decks.

AI coding assistant that understands, writes, and fixes code faster using LLMs and code context.

Provides expert-quality code data for training and evaluating frontier LLMs.

AI-powered legal platform for lawyers, offering calculations, consultations, and process monitoring.

Intelligently directs AI requests to the most cost-effective model, saving teams up to 60% on AI expenses without sacrificing performance.

AI-powered language learning platform using chat-based interactions for conversational fluency.

An AI assistant for financial modeling in Excel that helps users build models faster and with fewer errors.

Track experiments, validate models, and collaborate with confidence using Skore, the methodology layer for AI coding tools.

AI coding assistant that helps developers write, debug, and document code faster.

Helping developers trust AI-generated code and ship faster.

AI-powered recruitment agents that streamline hiring for job seekers and companies.

AI-powered platform that turns plain English ideas into production-ready full-stack applications.

An open-source platform for building and running AI coding agents that automate software development tasks.

AI-powered transcription and video generation for higher education.

AI-powered platform for legal professionals to draft, review, and manage contracts.

Online language school offering live, teacher-led classes for professional and personal development.

An AI-powered academic platform for research, content creation, and assignment enhancement.

OpenAI is an AI research and deployment company dedicated to ensuring that artificial general intelligence benefits all of humanity.

AI-powered personal assistant for developers to manage workflows and reduce burnout directly from Slack.

AI-powered platform to enhance developer productivity and streamline coding workflows.

Descomplica is a Brazilian edutech platform offering online courses for college entrance exams, undergraduate, and postgraduate degrees.

AI-powered IELTS writing feedback and score improvement tool.

AI-powered code search and understanding for developers.

Builds complete apps by messaging AI, using agentic AI for reasoning, coding, and deployment.

Jikara is a comprehensive mobile application for individuals preparing for the Japanese Language Proficiency Test (JLPT), covering all levels from N5 to N1.

Gradiac helps English teachers save hours of grading work while giving students clear, individualized feedback.

AI-powered platform offering personalized coding education and mentorship for developers.

Classbots provides AI-powered tools for educators to automate administrative tasks and personalize learning experiences.

Engpilot provides an AI-powered platform to help non-native English speakers improve their professional English communication skills.

AI-powered legal assistant for Indian advocates, automating drafting, case management, and legal research.

The coding agent that actually collaborates with you

AI-powered platform for automating software development workflows and code generation.