HttpMaster
Hoppscotch
API Fortress
Postman
Assertible
Request inspector
SoapSonar
CurlHub.io
FlexLearnAI
Flash Cards: Math
Coursera
Decks
Duolingo
Harken
Productivity Power Tools
StudyAnything.ai
Core HttpMaster features are: * HttpMaster project to store complete definition of API calls in one single place. * Broad set of http properties. * Dynamic parameters to simulate variations of input data or create global API values. * Response data validation with logical expressions. * Request chaining to use data from previous request with the next request. * Extensive data upload support, including 'multipart/form-data'. * Request data builder for creating request body with an optional dynamic parameters. * Request item execution with detailed progress monitoring. * Execution groups to create batches of requests. * Comprehensive execution data review and management. * Additional tools (basic request tool for ad-hoc execution, command line interface, OpenAPI import, etc).
FlexLearnAI is an AI-native study coach that converts your own material into adaptive practice. Upload a PDF, textbook, notes doc, or EPUB and it extracts the concepts, generates practice questions, and calibrates your level in the first 5 questions. From there it targets difficulty to your ability, tracks which concepts you've actually mastered, and schedules spaced-repetition reviews so nothing slips before your exam. Unlike static flashcard apps, every quiz is generated from your source material and adapts in real time. Students use it for SAT and ACT prep, NCLEX, professional certifications (PMP, CPA, AWS), college exams, language learning, and technical training. Free to start โ upload a document and run your first practice session without paying. Meet Flexo, the coach that studies with you.
HttpMaster FlexLearnAINo features have been listed yet.
HttpMaster is well-suited for developers, QA engineers, and testers who need to perform end-to-end testing of web APIs. It's particularly beneficial for those who require a versatile testing solution with both automated and manual testing features. It's also ideal for teams that need to validate the functionality, performance, and security of their web apps through an intuitive platform.
HttpMaster's answer
Developers and testers.
FlexLearnAI's answer:
Exam-focused students and self-learners who study from their own notes and textbooks โ nursing students (NCLEX), high schoolers (SAT/ACT), college students, and professionals earning certifications (PMP, CPA, AWS). Time-pressed learners who want study time that actually sticks.
HttpMaster's answer
HttpMaster's answer
Performance, simple UI, resource friendly.
FlexLearnAI's answer:
โข No manual setup โ it builds questions from your material instead of making you create decks (Quizlet, Anki) โข Adapts to you: finds your level in ~5 questions and targets your actual weak spots, unlike static question banks โข Spaced repetition built in, so you retain instead of cram-and-forget โข Free to start, Pro just $20/mo โ cheaper than most exam-prep tools
HttpMaster's answer
Microsoft .NET.
FlexLearnAI's answer:
Most study apps make you build flashcards by hand (Quizlet, Anki) or drill a generic, pre-made question bank. FlexLearnAI turns your OWN notes, PDFs, or textbook into practice questions automatically โ then adapts to you: it pins down your level in about 5 questions, keeps targeting the concepts you actually keep missing, and uses spaced repetition to resurface weak spots right before you'd forget them. It's a tutor's adaptivity built on your material, not someone else's deck.
Hoppscotch - Open source API development ecosystem
Flash Cards: Math - Simple and effective math flash cards
API Fortress - API performance, accuracy, and uptime testing. Without code.
Coursera - Build skills with courses, certificates, and degrees online from world-class universities and companies
Postman - The Collaboration Platform for API Development
Decks - Decks is a study application designed to keep all your stuff in one place, instead of having an app for flashcards, another for notes, and one to watch tutorials, create a deck and keep everything organized there.