15,843 tools
Compare plans, free tiers and API access across thousands of AI tools — every fact carries its source and check date.
Popular
Tools you can compare today
Catalog
Free planAssistant
String Catalog helps mobile teams localize iOS and Android apps through Git-connected workflows for .xcstrings and Android strings.xml, plus release notes and App Store or Google Play metadata. It automates translations across many locales while keeping reviewable diffs in GitHub, GitLab, or Bitbucket.
Free planAssistant
string.is is a privacy-friendly, open-source online toolkit that gives developers dozens of string converters and formatters in the browser without sending input to a server by default.
No free planAssistant
Stripe Atlas helps founders incorporate a Delaware C corp or LLC, obtain an EIN, issue founder equity, file an 83(b) election, and access legal document templates plus Stripe banking and partner perks for startups.
Free tier unknownAssistant
Strique is an agentic AI marketing platform that connects to ad accounts, websites, and martech tools to plan and execute paid media, SEO, content, lifecycle, and reporting from one workspace. It emphasizes brand-aware creatives, competitor insights, scheduled slash-command automations, and case-study ROAS lifts for D2C brands.
Free planWriting
Strong Editor is a free, privacy-focused online text editor that highlights weak wording in real time to help you write clearer, more persuasive drafts. It explicitly avoids AI generation, ads, and tracking cookies, positioning itself as a lightweight copy-strength checker rather than a full word processor.
Free planSecurity
strongSwan is an open-source IPsec VPN implementation supporting IKEv1 and IKEv2 for site-to-site and remote access VPNs. It runs on Linux, Android, FreeBSD, macOS, and Windows with extensive cryptographic and EAP authentication plugins.
No free planCode
StructAI markets an intelligence layer for revenue execution that connects marketing, sales, and revenue hubs with autonomous workflows across industries. Public pricing offers founder trials and monthly Starter, Growth, and higher tiers for pipeline, outreach, and attribution automation.
Free planResearch
Struct (StructAI) is an AI production engineer that watches every change in production, auto-creates monitors from pull requests, triages alerts, and can open fix PRs when confident. It targets engineering teams that want detect-triage-fix loops across deployments without constant manual on-call firefighting.
Free tier unknownResearch
Structured AI is a construction drawing QA/QC platform that uses AI agents to catch code issues, coordination clashes, and incomplete schedules across full drawing sets. Teams upload PDFs, connect Bluebeam Studio, or run checks inside Revit with cited findings.
Free tier unknownResearch
Structurely provides conversational AI for inbound and outbound voice, SMS, email, and chat with agent builder, cadences, live transfers, appointment scheduling, and Salesforce-native AI power dialing for mortgage and similar verticals.
Free planAssistant
STRUT is an AI writing workspace for long-form work such as essays, articles, reports, and manuscripts, connecting notes, sources, outlines, and drafts in one project. Free accounts collect daily AI tokens while Strut Pro unlocks higher monthly token limits and unlimited projects for sustained writing workflows.
Free to startAssistant
Studdy is an AI whiteboard tutor that teaches step-by-step from uploaded notes, textbooks, slides, PDFs, or homework problems across math, science, and other subjects. Students can interrupt for examples, practice questions generated from their materials, and visual explanations on an interactive board.
Free planAssistant
StudentAI bundles dedicated AI study tools and tutors for students, graduates, and professionals, covering writing help, exam prep, and always-on tutoring across academic workflows. The public pricing experience centers on a free generation allowance and an Unlimited upgrade for uncapped tool usage.
Free tier unknownResearch
Studio simulates consumer decision-making for CPG and QSR brands by running parallel market societies that test pricing, placement, and promotion variants before launch. The Y Combinator–backed product targets enterprise forecasting accuracy for go-to-market choices.
Free planCode
Studio.Design is a no-code design and publishing platform for portfolios, landing pages, and marketing sites with a visual editor, CMS, forms, SEO controls, Lottie animations, and Figma import. Users publish to studio.site on the free tier and upgrade per site to attach custom domains and raise page or form limits.
Free to startResearch
Study Potion AI turns lecture notes, videos, and articles into AI-generated flashcards, quizzes, formatted notes, and chat-with-document study flows. It targets students who want faster exam prep by automating study material creation from uploads.
Free to startAssistant
StudySim builds named study spaces from PDFs, class notes, slides, audio, video, or YouTube links, then generates study guides, notecards, quizzes, and two-speaker podcasts from the same sources. The beta product emphasizes one-click defaults and university-trusted positioning for exam prep.
Free planAssistant
Studyable is an AI-powered study app offering step-by-step homework help, AI tutors that handle math and images, flashcards, and an Essay Grader for writing feedback.
Free planResearch
StudyAITool converts PDFs and PowerPoints into AI chat, flashcards, quizzes, and true/false questions for student study workflows. It advertises a generous free tier with daily PDF limits and a Premium subscription for unlimited document processing and advanced study features.
No free planAssistant
StudyBuddy is a Chrome extension that answers screenshot or highlighted questions from online quizzes, homework, and tests using advanced AI models. It integrates directly into the browser so students can get step-by-step explanations without copying text between tabs.
Free planVoice
StudyCards App is an AI-powered flashcard maker with a paper-and-sticky-note interface, swipe-based review, optional listen-on-repeat mode, and Apple Watch uploads. The static bundle describes text-to-speech reading and AI-assisted deck creation for memorization.
Free planAssistant
StudyCrumb’s free paraphrasing tool rewrites essays and paragraphs for students with unlimited use, plagiarism-oriented output, and a simple paste-and-paraphrase workflow. It sits alongside StudyCrumb’s broader writing services but this tool is marketed as a no-cost essay rephraser.
Free planAssistant
Studydrive is a European student learning hub with shared lecture notes, exams, flashcards, AI-generated cards, study lists, and community Q&A across universities. Premium upgrades add AI enhancements, anonymous posting, ad removal, and offline downloads atop a large free document library.
Free to startImages
StudyFox AI helps students turn notes, PDFs, slides, and screenshots into flashcards, quizzes, mind maps, and step-by-step quiz solutions via web and Chrome extension. It advertises premium AI models, spaced-repetition decks, and inline solving on LMS pages such as Canvas or Moodle.
Showing 14,160 of 15,843 tools
Plan facts carry individual sources and check dates. Unknown values are excluded from required filters.
Method
Pricing, free tiers and API access come from the vendor's own pages, with the link kept next to the fact.
Every record shows when it was last checked, so you know how fresh a price or limit really is.
Submit it with a source, or send a correction. Editors review every change.