Product Hunt launches on September 5, 2026

dif.sh finished #1 with 305 upvotes, ahead of Reflexio and Ponytail. Here are the day's 40 top launches with 2,117 upvotes between them, across 22 categories, Open Source the busiest with 6.

launches
40
launches
upvotes
2,117
upvotes
makers on file
44
makers on file
categories
22
categories

The leaderboard

  1. dif.sh

    1. dif.sh

    305 upvotes

    Markdown feature flags your coding agent installs for you

    Open source feature flags. Every flag is a markdown file that lives with the code it controls: what it does, why it exists, and what you decided, reviewed in a PR like any other change. Your coding agent installs Dif in one command, no…

    Open Sourcedif.sh4 makers, 4 with emails
  2. Reflexio

    2. Reflexio

    260 upvotes

    Behavioral learning that makes AI agents better over time

    Reflexio makes AI agents better with every interaction. When users correct an agent, a path fails, or something works particularly well, Reflexio turns that experience into behavior the agent can reuse next time. Instead of leaving…

    SaaSreflexio.ai1 maker, 1 with an email
  3. Ponytail

    3. Ponytail

    248 upvotes

    Make new code the last resort

    Ponytail is a plugin that makes coding agents write the least code that works. Before adding anything, it checks whether the change is needed, already exists, or can use the stdlib or a native API. Same behavior, fewer lines to own.

    Artificial Intelligenceponytail.dev1 maker, 1 with an email
  4. Hyperprobe

    4. Hyperprobe

    222 upvotes

    Lets your AI agents debug production without redeploying

    HyperProbe is how backend teams debug production issues they can't reproduce locally. Instead of adding a log line and waiting on a deploy, we let Claude Code, Codex, or Cursor drop read-only probes into a running service and capture the…

    SaaSYC S26hyperprobe.co1 maker, 1 with an email
  5. at8pm

    5. at8pm

    138 upvotes

    Your honest journal

    Every entry you write today locks at the time that you configured — 8pm by default. Once it locks, that's it: no editing, no rewriting history, no quietly polishing what you actually felt in the moment. Just an honest, raw, and unfiltered…

    iOS1 maker
  6. Experiential Labs

    6. Experiential Labs

    138 upvotes

    Open source AI gateway turning traffic into a better model

    Experiential is the open source, zero markup gateway for BYOK, self-hosted and 1000+ marketplace models. It learns from your traffic to cut costs, recommend better models, and train a specialized model you own.

    AnalyticsYC S26experientiallabs.ai1 maker, 1 with an email
  7. PostBox

    7. PostBox

    117 upvotes

    Drag, drop, and post everywhere from your Mac's notch

    PostBox turns your MacBook notch into a drag and drop poster. Drop in finished work, write one caption, and post to YouTube, Threads, Instagram, Bluesky, Dribbble, LinkedIn, X, and TikTok at once. Schedule posts, add multiple accounts…

    Design Toolsusepostbox.com1 maker, 1 with an email
  8. CommuteBar

    8. CommuteBar

    107 upvotes

    Live commute times in your menu bar

    Glance at traffic. Leave on time. CommuteBar puts live commute times visibly on your Mac menu bar, no app-switching required. Save multiple destinations like office, school, gym. Schedule automatic switching for recurring commutes and get…

    Mac1 maker
  9. Queuebrick

    9. Queuebrick

    102 upvotes

    The Letterboxd alternative

    Fast, elegant movie tracking. Search a film, rate it, queue it, rank what to watch next. The Letterboxd alternative.

  10. Retold

    10. Retold

    105 upvotes

    Turn family voices into hand-drawn story films

    Record a memory or import an old voice note. Retold keeps the real voice and turns the story into a hand-drawn film and readable book. The sketches follow the people, places and little details as they are spoken, then every memory is kept…

    Audio1 maker
  11. GitWarren

    11. GitWarren

    92 upvotes

    Review code with your coding agents before committing

    It’s a local, PR-like code review app that works directly with your working tree. You can review committed, staged, unstaged, and untracked changes, leave inline comments, and organize the work into actual reviews without having to push…

    Open Sourcegitwarren.com1 maker
  12. BrickForgerAI

    12. BrickForgerAI

    88 upvotes

    Turn any prompt into a brick set you can actually build

    Type a prompt, get a buildable brick model. The AI (image + mesh gen) is just the front door. The real work is the brick-placing engine: voxelizing the shape, tiling it with actual LEGO-compatible parts, staggering seams for strength…

    Artificial Intelligencebrickforgerai.com1 maker, 1 with an email
  13. ​​AI Agents Listing​

    ​​The agentic AI ecosystem, in one directory​

    A directory of the agentic AI stack: AI agents that do real work, MCP servers that connect them to your tools and data, and agent skills that extend what they can do. Every listing gets an indexable page, and pages link across the three…

    Productivityaiagentslisting.com1 maker
  14. LiftmyCV 3.0

    14. LiftmyCV 3.0

    12 upvotes

    Your personal AI job search & auto-apply agent.

    Meet the brand-new LiftmyCV 3.0, an all-in-one AI job search platform that matches you with relevant jobs, generates job-specific resumes and cover letters, and applies on your behalf. This version introduces a new user interface, a Job…

  15. Malyatko — Baby tracker

    Privacy-first baby tracker that works fully offline

    Malyatko is a privacy-first baby tracker for the first years. Unlike most trackers it needs no account, shows no ads, and works fully offline — your baby's data stays on your device and iCloud, not a server. Track 18 activity types…

    Parentingmalyatko.app1 maker, 1 with an email
  16. Brain Rest

    16. Brain Rest

    19 upvotes

    Don’t let your browser rot your brain

    Brain Rest turns browser screen time into a character you’ll actually want to protect. See every site and tab in one dashboard, watch your Brain Level shift from Fresh to Dead, and use an on-page widget to stay aware without breaking your…

    Chrome Extensionsbrainrest.com1 maker
  17. Muse Spark 1.3

    17. Muse Spark 1.3

    10 upvotes

    Meta’s flagship for coding and long-horizon agents

    Muse Spark 1.3 is Meta’s latest flagship for agentic work and coding. Same $1.25 / $4.25 API price as 1.2, with about 20% fewer tool calls and 25% fewer tokens on coding in Meta’s own comparisons. It leads DeepSWE v1.1 at 75.4 and ties…

    Developer Toolsmusespark.ai1 maker, 1 with an email
  18. Autnest: Drive & AI

    18. Autnest: Drive & AI

    9 upvotes

    Automotive hub for drivers & garages — with AI built in

    Autnest brings car life into one place — digital garage, live map, marketplace, community, and roadside help. Drive.AI helps with research, diagnostic-style guidance, and damage workflows as decision support — not a substitute for…

    Androidautnest.com1 maker, 1 with an email
  19. supatools

    19. supatools

    6 upvotes

    The directory for product makers

    Discover the best web development tools, libraries, and resources to help you build your next project.

    Design Toolssupatools.dev1 maker
  20. Traction

    20. Traction

    6 upvotes

    helps indie founders get marketing traction

    There are 19 ways a company gets customers. OnlyTraction runs the Bullseye Framework using AI to narrow them to two or three winning opportunities. Then the tactics to test. The conferences, the communities, 1,500+ directories, with a…

    Marketingtraction.app1 maker
  21. VerbX Localize

    21. VerbX Localize

    6 upvotes

    Install Once Localize Forever

    VerbX Localize helps developers ship multilingual apps without maintaining translation keys or endless locale files. Wrap your source text, choose the languages, and Localize handles translation with context, glossary support, translation…

    Languages3 makers
  22. Dual Subtitles

    22. Dual Subtitles

    5 upvotes

    Two subtitle lines at once on YouTube and Netflix

    Original and translation on screen at once — made for learning a language from videos. Every YouTube subtitle language; on Netflix, translation works even with no track for yours. No server of mine behind it — nothing to go down, nothing…

    Chrome Extensionsdualsubtitles.app1 maker, 1 with an email
  23. AI Alignment Skill

    23. AI Alignment Skill

    5 upvotes

    Ensure alignment when working with frontier AI models.

    A simple but powerful skill that ensures alignment when using frontier AI models like Astra and Fable. With Astra released and presumably more powerful agents on the horizon, it's better to be safe than sorry. This skill can be used with…

  24. DevMotion v2

    24. DevMotion v2

    4 upvotes

    The AI video agent that looks at what it builds

    Every other AI video tool works blind. It writes a scene, gets back "success", and never knows whether the frame actually looks right. v2 fixes that: the agent renders real frames and looks at them. It caught a title running off the…

    Developer Toolsdevmotion.app
  25. Harbory

    25. Harbory

    4 upvotes

    Lightweight infra orchestration control plane, in Rust

    Harbory is a distributed control plane and agent system built entirely in Rust. A central web platform communicates with lightweight, high-performance agents running on your remote VMs, spinning up containers, deploying services, and…

    Open Sourceharbory.io1 maker, 1 with an email
  26. Retrace

    26. Retrace

    4 upvotes

    A visual timeline of your coding workflow in VS Code

    Retrace helps you remember what you were doing in a codebase. It automatically records your coding activity locally and turns it into a visual timeline, so you can look back at previous context and jump back into your work. No account, no…

    Productivityretrace.app1 maker, 1 with an email
  27. Any AI for Notion

    27. Any AI for Notion

    4 upvotes

    Connect any AI model to your Notion workspace

    Use ChatGPT, Claude, Gemini, or any AI agent to read and write your Notion pages. Secure OAuth, mobile app, one-time purchase, open source.

  28. Cropit

    28. Cropit

    4 upvotes

    Split Any Photo into a Stunning Grid

    Split any photo into 3×3 Instagram profile grids, seamless panorama carousels, or precision multi-tile cuts. Get instant reverse-order guides, with everything processed 100% in your browser.

    Design Toolscropit.xyz1 maker
  29. Schedule & Chill

    29. Schedule & Chill

    4 upvotes

    Let your AI write, schedule and post to LinkedIn

    Free LinkedIn post scheduler with an MCP server and REST API. Let Claude Code, Cursor or Gemini CLI write and schedule your posts. No credit card.

  30. Quenched - Water Tracker

    Keep yourself hydrated and watch your day fill up.

    Quenched is a beautifully simple hydration tracker for iPhone, Apple Watch, and Android. Set a smart daily goal, log water with a tap, sync with Apple Health or Health Connect, and watch your day fill up.

    Androidgetquenched.com1 maker, 1 with an email
  31. TAMA

    31. TAMA

    5 upvotes

    Daily Japanese conversation practice. No tutor required.

    Practice realistic Japanese conversations by voice or text, get clear feedback, save useful vocabulary, and review it with spaced repetition. Free and open source for macOS, Windows, and Linux, using local models or your own API keys.

  32. AnyWorld AI: Live In Any World

    Live a whole life inside any world you can imagine.

    Live a whole life inside any world you can imagine. Choose an anime, book, show, game, or create your own world. Make choices, build relationships, face consequences, and let characters remember what you did. AnyWorld AI turns each world…

    RPGs1 maker
  33. NearPair for Mac

    33. NearPair for Mac

    3 upvotes

    Your non-Apple earbuds deserve the AirPods treatment on Mac

    NearPair detects compatible Fast Pair earbuds nearby and shows a calm, native setup card on macOS.

    User Experiencenearpair.app1 maker
  34. AuditReady

    34. AuditReady

    3 upvotes

    SOC 2 & ISO 27001 without the enterprise price tag

    AuditReady keeps frameworks, policies, tasks and evidence in one place so a 5–50 person team can answer vendor security questionnaires in an afternoon and walk into an audit prepared.

    Productivityuseauditready.com1 maker, 1 with an email
  35. OptiMom

    35. OptiMom

    3 upvotes

    Stop juggling. Start living.

    A smart calendar app that helps busy families effortlessly plan their children's activities, optimize driving routes, and manage carpools, ensuring a harmonious schedule.

    Kidsoptimom.com1 maker
  36. Food Holidays

    36. Food Holidays

    3 upvotes

    World food holidays on a beautiful calendar

    See today’s national food and drink days across the United States, Italy, Mexico, Japan, China, France, India, Spain, Israel, Türkiye, Saudi Arabia, and International calendars.

    Web Appfoodholidays.app1 maker, 1 with an email
  37. Photosynthesis: 2-Lens Camera

    Use 100% of your camera

    Photosynthesis is an innovative camera app for iPhone that takes photos from two lenses at once, then stitches them into one extraordinary result. Photosynthesis enables you to use 100% of your camera, combining the scope of the wider…

  38. Lie Predictor

    38. Lie Predictor

    3 upvotes

    Check if people will answer a question truthfully

    Check any question to see how likely people are to lie about it. In user research, customer feedback, consumer polling, many times we ask questions that seems perfectly credible, without considering if people even know the answer, and if…

    User Experienceliepredictor.com1 maker
  39. LetsLaunch

    39. LetsLaunch

    3 upvotes

    Launch your SaaS instantly for free with SEO backlink

    LetsLaunch is a startup launch and product discovery platform built for founders, indie hackers, makers, and early adopters. Launch your startup, SaaS, AI tool, app, or side project, get discovered by new users, and build long-term…

    Marketingletslaunch.co1 maker, 1 with an email
  40. Telavevodettismo

    40. Telavevodettismo

    3 upvotes

    "I told you so" hits different with a timestamp

    🔮 Telavevodettismo — finally get receipts for your predictions We all know someone who says "I called it" — after the fact, with zero proof. This app fixes that. Log your predictions before they happen, track your accuracy over time, and…

This day's categories

Questions

What was #1 on Product Hunt on September 5, 2026?
dif.sh ("Markdown feature flags your coding agent installs for you"), with 305 upvotes. Reflexio (#2) and Ponytail (#3) followed.
How many launches are listed here?
40: the top of the day's leaderboard, ranked launches first. Junior has 44 makers on file for them, 20 with a work email.
Which time zone is the day in?
Pacific time, as Product Hunt runs its leaderboard: a day starts at midnight in San Francisco.

Reach the 44 makers behind September 5, 2026's launches

Junior lists the founders and makers behind every launch here, with verified work emails, LinkedIn and X profiles, CSV export and a daily Google Sheet. $29/month, cancel any time.