SaaSHub Experts
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1. FastAPIFastAPI is an Open Source, modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints.
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2. FirebaseFirebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
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3. Amazon API GatewayCreate, publish, maintain, monitor, and secure APIs at any scale
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4. Insomnia RESTDesign, debug, test, and mock APIs locally, on Git, or cloud. Build better APIs collaboratively for the most popular protocols with a dev‑friendly UI, built-in automation, and an extensible plugin ecosystem.
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5. ApigeeIntelligent and complete API platform
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InboxAlly sponsoredEnterprise Email Warmup. Sender Domain Reputation Repair Tool to get out of spam and see open rates more than double in 4 to 14 days. We engage with your emails to teach mailbox providers not to send your email to the spam or the promotions folder.
Top 15 API Tools of Oct 21
SaaSHub Submit
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Zyene Reviews Posted on Website HuntMore reviews. Less busywork.
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WalletPassBuilder Posted on Indie HackersCreate Apple Wallet and Google Wallet passes in minutes - loyalty cards, memberships, tickets and coupons, with no code or straight from Claude and ChatGPT.
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Dialedin.bio Posted on Indie HackersYour bloodwork, what you take and how you feel, on one timeline
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XignDoc 15 postsXignDoc provides secure e-signatures software in the UK for fast and reliable online document signing. Sign Word documents digitally with ease and confidence.
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FakeNameGenerator.online 14 postsFree browser-based generator for fictional user profiles, mock API fixtures, test credit cards and database seed scripts.
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TrackingTime 14 postsTime tracking for agencies and professional services teams
Questions & Answers
- A single native POS app that runs on Android, iOS, Windows, and macOS from one codebase
- An offline-first local database with real-time multi-device sync, so the counter never stops when the internet does
- A multi-tenant backend that isolates each dispensary's data and lets operators run multiple brands from one admin
- AI models integrated at the platform level — the Smart Scanner, voice assistant, strain researcher, and automatic translation/categorization all share the same agent layer
- Branded customer web shops and a cast-display engine (for TV menus) that run off the same inventory source as the POS
- Hardware integrations with Bluetooth scales, label printers, handheld terminals, receipt printers, cash drawers, and barcode scanners
Budy is a modern, cross-platform stack built around a few core principles rather than a specific framework:
We keep specific framework and vendor details internal — the focus is on what the platform does for dispensary operators, not which SDK it's wired with.
The 4K Download project launched in 2012 with the goal of building functional, easy-to-use, cross-platform multimedia apps; the "4K" name refers to the video resolution. 4K Video Downloader became its flagship product, alongside 4K YouTube to MP3, 4K Stogram and 4K Slideshow Maker. 4K Video Downloader Plus is the modern successor, rebuilt on an updated technology stack to keep pace with changing sites and formats while preserving the simple paste-the-link workflow.
PromptBrake brings automated AI security testing, evidence-backed findings, remediation guidance, baseline comparison, and CI release gates into one workflow.
Run 138 checks across 18 attack categories against your AI application using a self-hosted runner inside your infrastructure. Review failures, fix them, and retest before release.
The focus is practical: help teams turn security findings into release decisions while keeping prompts, credentials, responses, and test evidence in their own environment.
Python and React
It's 100% free and does not require a software or subscription. All of your data stays on your computer.
Lebra stands out by offering a combination of integrations, AI-driven personalized recommendations, and a user-friendly interface designed to enhance leadership engagement effectively and efficiently.
From the public product materials, the clearest way to describe the technology behind Crypto Clarity AI is this: it is a browser-first web app built around a deterministic portfolio analytics engine, not just a price dashboard. The scoring framework uses established risk and portfolio metrics such as HHI for concentration, Pearson correlation, Sharpe ratio, 180-day annualized volatility, and maximum drawdown. Market data is sourced from CoinGecko and updated every five minutes, checkout is handled through Stripe, and the user experience is designed to work across phone, tablet, and desktop without requiring wallet connection or server-side portfolio uploads.
Whapier is built in Romania by ADDO VISION SOLUTIONS SRL, a Meta Partner. Working with European businesses, we kept hearing the same problems: WhatsApp tools hosted outside the EU, unclear data processing, invoices that did not handle VAT correctly, per-agent pricing and hidden markups on Meta's message fees. Whapier was created to solve exactly that: a complete WhatsApp Business platform on the official Cloud API, built, hosted and invoiced in the EU, with transparent costs and no per-agent fees.
Most AI advertising tools generate creative and stop there. Adside is a team of AI agents that runs the operational side of paid ads end to end: the agents research competitor and market creative, build and organize ads, bulk-import campaigns, and keep day-to-day ad ops moving across Meta, LinkedIn, and Google Ads - with human oversight. It also ships a first-party MCP server, so you can drive it from any MCP-compatible AI client.
MathEditor is also accessible to persons with visual disabilities, making it easy to use for everyone.
ImageTo3D is powered by next-generation, proprietary AI diffusion models specifically trained on massive datasets of high-quality 3D assets (such as the Seed3D / Hunyuan architectures). Under the hood, we utilize advanced neural rendering, multi-view generation networks, and fast cloud-based GPU clusters to process images in real-time. Additionally, our pipeline includes sophisticated algorithmic post-processing to automatically unwrap UVs and optimize polygon counts for immediate industry application.
Next.js and React (TypeScript) Vercel Supabase (Postgres) Stripe Connect Anthropic Claude Cloudflare R2 Resend Sentry
Individual consumers (B2C); launching publicly August 2026.
CapyScout connects who to contact, why now, and what to say. It finds companies that fit your business, spots relevant changes, finds the right person and drafts the outreach. Each buying signal includes its source so you can check the reasoning. You review the first messages, then let an agent run the campaign once you're happy with it. You can also describe your own buying signals in plain English.
Lab heads, quality control, analytical development and CMC teams in contract laboratories, CDMOs and specialty chemical companies, mainly in Germany, Austria and Switzerland.
Latest nominations and activity
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Jasper.aiThe Future of Writing Meet Jasper, your AI sidekick who creates amazing content fast!
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Recalert.usFree recall lookup for U.S. businesses. Search CPSC, FSIS, NHTSA and FDA product recalls by product, brand, model or UPC in seconds.
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YamiToolsDiscover and compare AI-powered tools, curated by category.
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WritesonicIf you’ve ever been stuck for words or experienced writer’s block when it comes to coming up with copy, you know how frustrating it is.
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Crypto Clarity AI
See if your crypto portfolio is dangerously concentrated before the next crash. Get a clear risk score across 12 dimensions in 60 seconds free, no wallet needed.
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ChatGPTChatGPT is a powerful, open-source language model.
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KeepKnownAutomatically filter unknown senders out of your inbox without deleting them. The strict allow-list filter for Gmail, Outlook, and Microsoft 365.
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CapyScout
CapyScout is your AI sales agent. It finds the right prospects and reasons to reach out, writes personalized LinkedIn messages, emails, and call scripts, and runs outreach campaigns.
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Nimblewit AppTrack your TFSA, RRSP, 401(k), IRA and brokerage accounts in one place. Import statements, see real returns, dividends and expected income. Free to start.
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blogmateGrow your organic traffic on autopilot. Blogmate writes one blog a day, researched and written in your brand voice and built to rank on Google and get cited in AI search.
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MoneyCalc.inDiscover accurate and accessible financial tools designed to simplify your calculations and improve your financial literacy effortlessly.
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FormSubmitsForm submission processor with server-side validation built in
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Car ExpensesTrack fuel, maintenance, travel, and vehicle income — with accurate reports you can actually trust. Free for up to 2 vehicles.
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SpeakspotsPlan your itinerary in 1 minute and get it on WhatsApp, for Free!
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Word.StudioWord.Studio simplifies the creative process with AI-powered tools designed to help you generate fresh, original content without the need to battle with prompts or chatbots. Use straightforward forms to generate higher-quality results.
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Surva.aiSurva.ai is an AI-powered survey platform designed for SaaS companies. Capture customer feedback with post-purchase, embedded, and link-based surveys. Gain AI-driven insights, reduce churn, and showcase testimonials on your Wall of Love with ease.
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RytrRytr is an AI-powered writing tool that helps you create high-quality content, in just a few seconds, at a fraction of the cost!
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Nocalendar.appThe fastest way to find the perfect meeting time. No accounts, no ads, just simple scheduling.
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Detector ProInstantly detect AI content
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PromoPilot.linkTiered link building from $30, SEO audits, Google rank tracking, keyword research and website security. Explore SEO Radar and 125+ free tools in one platform.
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EMOZ.ioProtect what you create with proof that lasts. EMOZ turns your work into a verifiable, tamper-proof certificate of ownership with a simple drag and drop.
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LarkWriteLarkWrite is an AI writing coach that keeps you the author — margin notes and conversation first, with suggestions when you want them. Any genre: memoir, poetry, essays, fiction, lyrics.
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HumanizeAI.proHumanize AI is a cost-free online service designed to improve AI-generated writing and make it sound more natural, readable, and human-like.
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AnywordAn AI platform for creating effective marketing copy, trained on tens of millions of successful ads.
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ZapSpendAI-powered expense tracking from receipts and voice
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Ad CorrectorEvaluate billboard and outdoor ad designs for clarity, visibility, and effectiveness with quick visual feedback.
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AIToHumanAdvanced AI humanizer that converts robotic AI-generated content into natural human writing. 95%+ bypass rate for GPTZero, Turnitin & more. Built by AI & linguistics experts.
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RoundTheWay.appLike Uber for mobile businesses. Tap, and a nearby barber, pet groomer, detailer or mobile vet who's free right now comes to you, or book their open hours for later. Payment is held until the job is done. Free for businesses, no lead fees.
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LowFax.comNo subscription. No software. Upload your document, enter the fax number, and pay — starting at $1.99 for the US. Now faxing to 12 countries. Encrypted fax service.
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ChorvisTrack inventory, scan barcodes, log shipments, manage your team, and see low-stock items at a glance.
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PneumaticPneumatic is an SaaS workflow management system designed to make business process management easy and accessible to everyone. Pneumatic emphasises ease of use, iterative development and continuous improvement of business processes.
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CogniRank.techTrack and optimize your brand's presence in AI-powered search results. Monitor ChatGPT, Google AI, Gemini, Claude and Perplexity.
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Book NotificationGet Notified of new books by your favourite authors. Daily Book Release Calendar. Author lists sorted by series, in publication and chronological order. Printable lists.
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AI Content BridgeThe complete AI content workflow for WordPress: plan topic clusters, generate posts, and handle internal linking in one plugin.
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Invo by Tirth EnterpriseFree browser-based image tools
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LogicBallsThe world's first hallucination-free AI that asks clarifying questions before answering delivering accurate, verified, and trustworthy outputs with zero fact-checking required.
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FreeVPSServer.netGet a free VPS server in about a minute. Sign up with an email, choose a plan in your dashboard, and go live — NVMe SSD, one-click WordPress, no card needed.
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StoryVoiceSend your customer a link, they talk for 5 minutes, AI writes a publish-ready B2B case study with real quotes and metrics. The only AI tool that does the customer interview itself - no scheduling, no blank page, no chasing.
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Paranoid QryptoThe future of secure encryption is coming. Discover innovative solutions for data protection and privacy.
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VitaeMapMap your life stories across 12 visual representations: geographic, emotional, chronological and beyond. Built for meaning, not visibility. You can share any facets of your life with who you want and with the visual storytelling that better works.
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arkerahTell your story once. We rank open roles in five European countries against it, show only the ones you could get, and write a CV for each. Start free.
