Alternatives
Products that do what Stemformulas.com does
During my (ongoing) engineering degree, I've often looked up formulas and been frustrated at the lack of reliable results. Some formulas (usually the easy ones) get their own blurb on Google results, while others are a few clicks away, or are most easily accessed by looking at random university slides on Google images. It felt like, in this day and age, there should be a site that serves the small but noble purpose of being a source of truth for formulas, while leveraging modern website technology to provide a fast and user-friendly experience. So, I made stemformulas.com (with some…
- 1SC
Have been working on this for months, hope you guys will like it. Feel free to share your own side project in the comments.
2012 · sideprojects.com
- 2MW
A place to learn and share html5/css3/js snippets. Its on a alpha/mvp stage right now. Let me know what you think. Http://html5snippets.com
2011
- 3
- 4HU
Link here: http://beta.whatispolymath.com Despite all the educational material on the web, I found it pretty hard to learn how to code and design. I had trouble finding high-quality content, figuring out what to learn next, and staying motivated without easy ways to track my progress. So, my co-founder and I built Polymath. Our MVP is pretty simple right now: you can find & submit good content, bookmark & track your progress across different resources, and rate/comment on the material. We’re trying to build a really fun online learning community, and we’ve got some more cool features…
2012
- 5TP
I have had a few conversations in the past year with non-technical folks (traditional finance types, consultants) who asked for a simple explainer on how GPTs work. These people generally have the horsepower to grasp new concepts quickly but don't necessarily have the math background to dig in super deeply and want a stronger framework than "they predict words". I had generally been pointing them to Karpathy, Illustrated Transformer, and other youtube content but I figured something more hands on without the math requirement might be better at explaining questions like "why matrix…
Jun 2026 · understandgpt.xyz
- 6PS
Hi HN, This one's a twofer. First, I'm showing off my personal site and blog, garrettgoss.com [1]. I'm looking to make a career change — from biomedical engineering/biomedical research, to research and development engineering in the consumer product development/additive manufacturing space — and felt that my prior work experience inadequately reflected my true interests and skills, which are better exemplified by my side projects. I put this together for myself, to better document my own work, for the broader internet, to share some of the projects I've developed to those who might…
2019
- 7AC
Hey everyone, I recently built a free Chrome extension called Formula to LaTeX that lets you convert any formula from an image, screenshot directly into clean LaTeX code. No signup. Just: 1. Paste or drag & drop an image of the formula 2. Get the LaTeX code instantly 3. Copy it with one click It works great for math, physics, and chemistry formulas, super helpful if you're working on problem sets, papers, or presentations and don’t want to retype complex equations. Would love any feedback! I'm still improving it, so feel free to roast it or share ideas
2025 · chromewebstore.google.com
- 8YF
Cut to the chase: https://www.youtube.com/watch?v=4nyzl3pVXp4 I really am a big supporter of quality education being available for everyone, and because of that I've opted to open source my CS education on YouTube. I'm starting with Rails, and I will eventually work around to more core CS topics like circuits -> logic gates -> binary -> assembly -> c -> Data Structures -> Algorithms etc. If you like it subscribe and I'm looking for all the feedback I can get on how to make it better :)
2015
- 9MW
Hey HN check this really cool worlde-inspired project of a friend of mine. :)
2022 · mathle.bykiru.rocks
- 10WP
This was my recent weekend project, aimed at teaching me JavaScript, a bit of HTML5, and (mostly) WebGL. The orbital data are from NASA JPL. I was inspired in part by this Flash app: http://www.dynamicdiagrams.com/wp-content/uploads/2011/04/orrery_2011_bce.swf, but wanted to do something in 3D. Coming from the games-dev world, this is my first introduction to web coding. The UI is jquery. I mostly used http://learningwebgl.com/blog for the 3D stuff. Being WebGL, it will work mostly on Chrome, Firefox 4 Beta. Forget about IE. I needed to figure out how to render text to the WebGL canvas - I…
2011 · solar-system-explorer.com
- 117T
I am happy to announce the updated release of my web app, 7courses. http://7courses.com/ 7courses makes it ridiculously easy to jot down and manage your collection of recipes. As someone who cooks, I often find recipes online or in cookbooks, but have no way to organize them. I have been looking for a digital "recipe box". After plenty of searching I just made my own. 7courses was built around the idea that you should be able to choose how you want to organize your recipes, and doing so should be easy and quick. The UI is responsive and intuitive, with a no frills design. Just jump right in…
2011
- 12IB
This site was born out necessity. I needed a break from the internet we know today: clickbait, politics, low quality content, breaking news, AI summaries Such a breadth of information but so little depth Now I spend (too much of) my time here, going deep. Just when I need to scratch that itch. But I keep coming back because it actually makes me a better engineer. Oh, and I made the site. Right. Anyways, I hope you enjoy crawling the blogs as much as I have. Enjoy! And PLZ reply with any feedback. I am here to make this site better. It will always be free.
2025 · codecrawl.co
- 13GA
Hi All - I'm Eric, and I’ve been working on a math-tutoring application that continually adapts to a child’s learning needs as they answer questions: www.grokkoli.com/beta (introduces new concepts in granular steps, figures out where/how learners might be confused & attempts to resolve it, speeds kids past the stuff they understand clearly, tracks their recall, answer-speed, and more). Currently in beta, looking for families with kids in grades 1-6 to beta-test. Especially interested in taking on families that are finding math to be a challenge. Happy to share more details if…
2021
- 14AL
I wanted to share something I've been working on recently: Statum, a handy web analytics tool. https://github.com/extractumio/statum The journey began when I found myself frequently needing simple web analytics for my projects. I tried Google Analytics, especially GA4, and realized it was quite complex and, at times, not very accurate, especially when I wanted to view stats for the current day or recent hours. Then I tested a few fancy startup solution but ended up with way too expensive plans the expect me to subscribe (I'm not that rich to pay $99/month for every…
2023 · github.com
- 15IM
Hi HN, I am a solopreneur in the evenings and a software engineer during the day. In the past, I have created lots of calculators for my web projects and freelancing friends. These were pretty basic, but users always welcomed them. I also used currently available builders, but the problem was that they were either slow, broke on mobile devices, had nonsense page view limits, or were expensive. Some even ticked all those boxes. So I have decided to create my own, with a simple interface, and called it Creative Widgets (if it ever takes off, I plan to add more exciting stuff like charts, etc,…
2024 · creativewidgets.io
- 16LJ
I've been working for about 8 months on http://www.Learneroo.com, a site to teach programming and more through challenges. I created the site and all the content on it, and I'm looking for some feedback. Thanks!
2013
- 17IB
Hi HN, I've been working on this for a while and it was hard to decide when to stop, either on the way information is presented or when to stop with adding entries. It's not meant as a blog, but rather as a reference that keeps growing. Link: https://thehardparts.dev Currently I've created 4 main section: - Failure Modes: ways project go wrong - Red Flags: early signals that are worth taking seriously - Tech Decisions: common and not so common trade-offs for hard choices - Playbooks - guided approach for situations that repeat I've also focused on creating links between them to…
Apr 2026 · thehardparts.dev
- 18SO
Inspired by a comment thread yesterday [1] I made this mini site: https://excel.secretgeek.net/ Reason: I often want to share Joel Spolsky's famous "You Suck at Excel" video tutorial with "important" business people inside the large enterprise where I work. But it would be easily misconstrued as trolling if I sent a business customer a URL that literally tells them, right in the heading, that they "suck" at excel. So, as advised by user @TuringTest (in the thread mentioned above) I created a mini site, on its own sub-domain, that is palatable to a business mindset, and…
2019
- 19DC
Hi there! I'm building Diagrammatic, a simple and free online tool with the ambition to become a community for diagrams-as-code enthusiasts. Currently, it supports Mermaid, PlantUML, Dot (Graphviz), Vega-Lite, and Typogram, but I'm looking to add more languages. Please let me know if there's a particular one you use. I'd appreciate any kind of constructive feedback as well. Thanks in advance!
2024 · diagrammatic.com
- 20TP
Hi HN, we’re building deriveit.org, the website where you can learn any topic, quickly. On our website, you pay to ask any physics, computer science, or math question, and our community competes to give you the best explanation (for a cash reward). Right now, resources with high quality content are a time drain (papers, textbooks, and courses). We think that material is typically written in an unnecessarily hard-to-read way, but that there are tons of people who are passionate about explaining it well to others. We want to give the world access to those people, and remove barriers for them…
2023 · deriveit.org
- 21IM
Hi hn! It has always annoyed me that recipe websites are so cluttered and have so much (in my opinion) useless fluff, so I made a little website to solve that problem! One good thing about SEO for once is that Google has pretty much forced the internet to adopt JSON-LD for recipes so many recipes are directly extractable and for others I have several fall back parsers including an indieweb parser :) If you do find a website that is broken feel free to click the flag button or share it as I would love to fix any edge cases
Apr 2026 · tangled.org
- 22LC
We're sick of teaching (and using) SPSS, Stata, and R. Why isn't there a simple site that tells you which test to run, how to format your data, and how to interpret the results? We built LittleStat because we found the current tools unbearably painful. Looking forward to your feedback :) http://littlestat.com p.s. We're also looking for a couple more R/statistics experts to help us add tests and provide more detailed feedback.
2012
- 23IB
Hello all, I built about 2 years ago a coding website for kids, teens and adults: https://codeguppy.com Despite my efforts to promote the website it is still not well know. I post almost daily about it on Twitter at https://twitter.com/codeguppy ... but even there I don't have views. The website is fun... although I still have a ton of things to add. I appreciate if you take a look and suggest improvements and most importantly help me with spreading the news about this website. I really need a boost! Thanks all!
2021
- 24IM
To promote my startup, I made a free tool that compares your Google Analytics stats to the industry standard's stats that have been pulled from a whole bunch of sources. Let me know what you guys think! http://www.voodooalerts.com/is-my-site-broken
2014
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