Dev tools · alternatives · 2026
24 alternatives to SupaFill
Autofill that understands context
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier.
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Mock Fill▲13I got tired of typing the same names, emails, and phone numbers again and again while building/testing forms — usually ending up with gibberish. So I built MockFill, a Chrome extension that auto-detects input fields and lets you autofill realistic mock data in one click (single field or entire form). It’s free, works locally, and doesn’t collect any data. Would love feedback from the HN community
2025 · mockfill.com · its alternatives →
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superfill.ai▲73Stop typing. Start autofilling with Superfill.AI.
Dec 2025 · superfill.ai · its alternatives →
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Supafaxfree tier, from $35/mo▲229Hey HN, We're building Supafax an agent that uses email as its memory and config store. Here's how it works: - You email yourself to talk to the agent - The agent uses that slice of your outbox as it's inbox and short term memory - It can insert emails into your inbox to store routines, reminders, and rules for itself Email is such a good primitive because it's essentially an append-only immutable record of all the valuable context about you and your relationships, and agents thrive on this highly structured surface. The tricky bit is users are very reluctant to share that data with…
Jun 2026 · supafax.com · its alternatives →
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Generate real disposable identities to protect your inbox
Feb 2026 · chromewebstore.google.com · its alternatives →
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Reggy▲182Signup forms filled automatically with random identities
2019 · chromewebstore.google.com · its alternatives →
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WebFill▲24Automate form filling, emails, and MCQs with AI precision.
2024 · webfill.co · its alternatives →
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Fillsnap▲3Autofill that finishes the form, not just your email
May 2026 · fillsnap.com · its alternatives →
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Supamail AI▲214I run multiple projects and D2C brands, which means I manage 6 different Gmail accounts and easily get 100+ emails a day - team updates, invoices, customer queries, newsletters, OTPs… everything mixed together. After missing a few important emails that actually cost me money, I realized the problem wasn’t the number of emails, it was how hard it was to make sense of them. So I built Supamail, an AI-powered inbox that helps you read less and understand more. Here’s what it does: - Emails in last 24 hrs shrink into clear summaries, smart categories, and easy replies so you never feel…
2025 · supamail.co · its alternatives →
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Jobfillr▲15Autofill your job application forms in a single click!
2024 · jobfillr.com · its alternatives →
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SlideFill▲106Save hours creating data-driven personalized presentations
2024 · autoscaled.com · its alternatives →
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Save and auto-fill forms on repeat visits, easily and secure
2024 · easyautofill.com · its alternatives →
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Hi HN — we've built a testing framework for Supabase that spins up fast, isolated Postgres databases for each test case. It’s designed to make RLS policies easy to validate with real database state, without global test fixtures or mock auth. Features: - Instant isolated Postgres DBs per test - Automatic rollback after each test - RLS-native testing with `.setContext()` for auth simulation - Flexible seeding (SQL, CSV, JSON, JS) - Works with Jest, Mocha, and any async test runner - CI-friendly (runs cleanly in GitHub Actions) We also published example projects and a free set of tutorials:…
Nov 2025 · npmjs.com · its alternatives →
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Monitor user experience with self-maintaining browser tests
2020 · datadoghq.com · its alternatives →
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SnapFill▲36AI form filling that keeps your layout 100% intact
Feb 2026 · gosnapfill.com · its alternatives →
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AuthFill▲3I built AuthFill after catching myself switching between tabs for the hundredth time just to copy a 6-digit verification code. You know the dance: sign up → wait for email → hunt through promotions tab → memorize code → switch back → already expired. AuthFill kills that friction. You connect your email accounts once, then whenever you hit a verification field, just click the extension icon. It instantly parses your recent emails, grabs the code (or link), and copies it or opens the link directly in a new tab. Works for: - Email verification codes & magic links - 2FA/OTP codes - Password…
Feb 2026 · authfill.com · its alternatives →
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Verify your email list before you hit send
Aug 2026 · mailercloud.com · its alternatives →
- 22NM
Every product that allows usernames eventually ships the same broken solution. Someone adds a blacklist. Then a regex. Then another regex copied from StackOverflow. It works just long enough to ship, and then `admin`, `support`, city names, brand impersonation, and obvious slurs start leaking through anyway. Everyone knows it’s fragile, but it gets ignored because "it’s just usernames". I’ve had to rebuild this logic across multiple products, and I got tired of pretending it’s a solved problem. So I built *username.dev*, an API that answers a more useful question than "is this taken?" — it…
Dec 2025 · username.dev · its alternatives →
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SmartFill.ai▲14Autofill web forms using AI and your own knowledge base.
2025 · smartfill.ai · its alternatives →
- 24
Free email verification tool feature from NLSQL
2018 · nlsql.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →