From Developer to Toolmaker: 3 Chrome Extensions I Built to Solve Real Problems
Hey PH!
I'm an independent developer and software engineer from China. I spend most of my time working with Python, APIs, and trying to turn messy problems into clean solutions.
I built three Chrome extensions in my spare time each one born from a real need I ran into during work or daily life. Thought I'd share them here. Hope they're useful to some of you too.
1. Virtual Camera - Video Replacement
When you're promoting, take a look here. You might get 10x more user feedback.

I don't know if you've been in this situation. You have some users, maybe a few dozen, maybe a few hundred. But they're silent. You don't know where they came from. They just use your product quietly and never say a word.
Then one day they leave. Churn. Gone. And you have no idea why.
I don't know about you, but I've been through exactly this. And it made me keep thinking: if I could just catch users in the moment, right when they're actually experiencing the product, and understand what they're feeling and thinking at that exact second, maybe I'd find out what's broken before they walk away.
So I built https://founderping.app
The idea is simple. At any moment you choose, a little widget pops up inside your product basically your clone. It carries your curiosity, asks the questions you'd ask, talks to your users by voice or text. And it actually has the time to sit down and have a real conversation with every single one of them. Because let's be honest, you don't.
2 lines of code on web. SDK for mobile. Matches the user's language automatically.
I'm in beta right now, recruiting a small group of founders to run it on their real users. Free Pro access, no billing, cost on me.
If you've got a SaaS with reasonable number of users and want to understand them better without chasing every single one manually, drop a comment. Even if you try it for 10 minutes and tell me it's bad, that's useful.
I got tired of messy business cases — so I built my own tool
Hey I m Craig, founder of ProductM8.
After years of working on business cases across different companies, I kept seeing the same problem good ideas getting lost, and bad ones slipping through, because the thinking wasn t clear.
I tried using AI to speed things up, but most tools just generate content. They don t help you actually think they just fill in the blanks.
Your Virtual Chief of Staff that watches your tools so you don't have to
Running a company means juggling Slack, Jira, Linear, HubSpot, Zendesk, Google Calendar and 10 other tools every single day.
The problem is none of them talk to each other. Things get committed to in meetings and disappear. Replies go unanswered for days. Work stalls with no clear owner. And you only find out when it's already too late.
Renewal Radar — a subscription tracker that roasts you for the bad ones
I built Renewal Radar a subscription tracker with a twist.
Most people have no idea how much they're spending on subscriptions each month until the charge hits their bank account. I was one of them. So I built something to fix it.
Token bills were killing my indie project—so I built a cheaper AI API
I m an indie developer too. AI helps me code, debug, research, and turn ideas into products but the token bills often grow long before a project earns anything.
I ve seen individual developers turn small side projects into real businesses and achieve things that once seemed impossible. I built Mustham API because I don t want promising ideas to be abandoned simply because using AI became too expensive.
Mustham API provides access to GPT, Claude, Gemini, and Grok through one platform. By combining capacity from different accounts and routes, many routes are priced at less than half of the corresponding official API price, while users can still choose the specific model and route they want.
I have already invested a significant amount in capacity and stability testing, and the platform is still costing me more than it earns. We also provide direct support if you encounter stability, integration, or usage problems, we will help investigate them as quickly as possible.
We built Onbrd — stop onboarding clients over email
Hey everyone!
We just launched Onbrd (onbrd.net) and wanted to share it here.
The problem: Every time you sign a new client, you end up in the same cycle scattered emails, attachments getting lost, "did you get my last message?", and clients who have no idea what step they're on. It's stressful for you and confusing for them.
What Onbrd does: It lets you build a clean, step-by-step onboarding portal in minutes. You share one link with your client, and they can see exactly what they need to do, in order, with no back-and-forth. You can track their progress from your side so you always know where things stand.
Candor: Open-Source AI "Employee" Skills - Based off of real human psychological archetypes

Candor is my free, MIT-licensed Claude Code plugin: twelve work-mode "personas" that make an AI assistant direct, verification-driven, and honest instead of agreeable. A debugging persona that demands a reproduction before guessing. A data persona that reads numbers skeptically. A decision persona willing to say no. Each one is documented, benchmarked with eval scripts, and installable in minutes.
I built it because of what I learned running AI workflows on a real business (my mom's Shopify boutique, the Krafty Bandit project below): the failure mode of AI at work is not wrong answers, it is confident agreement. The workflows that shipped 2,861 catalog fixes in one weekend only worked because every call got checked by a human, and Candor bakes that discipline into the assistant itself. The repo includes twelve skill definitions, evals with published benchmark results, full documentation, and contribution guidelines.
It is labeled experimental (v0.5.x) and actively maintained. Free forever. It is also the companion tool for my YouTube channel, where I show the personas doing real work on a live store. github.com/itsryanlenk/candor
See more at my website https://www.ryanlenk.com where I log my whole journey giving the inside and sometimes not so glamorous stats behind SEO.
Try them out and let me know what you think!
Why Side Projects Compound 🏗️
Work hands you the problem. Side builds train choosing, cutting scope, and shipping when nothing is spelled out. Your own deploy surprises make work incidents feel familiar.
AI didn t delete the work. It moved the bottleneck up the stack. The scarce part isn t faster typing. It s naming the problem, picking limits, and knowing what good enough means for a real user.
Tired of forgetting plot points? I built an AI-powered reader and need your help to test it!
Hi everyone! As a long-time web novel addict, I ve always struggled with two things: intrusive ads and forgetting complex character relationships in 2000+ chapter epics.
So, I built AIReader. It s a clean, ad-free mobile reader, but with some "magic" built in:
AI Plot Summaries: It automatically summarizes the context so you can pick up exactly where you left off.
Dynamic Character Wiki: It extracts characters and their latest status as you read, creating a living database of the cast.
AI Illustrations: Long-press any description to generate high-quality AI art of your favorite characters or scenes.
I m looking for a handful of avid readers to join our early internal beta. You'll get free, unlimited AI power to help us shape the future of reading.