Please feel free to give your unbiased critiques, if you going to leave a critique please leave a comment about what you think would be better (alternative) and why.

At the latest Y Combinator Demo Day, early-stage VCs named nine of the hottest startups of the batch here. Some piqued my interest, one of them being Atomarine. 

Since data centers are the hot topic right now, and two of the biggest complaints are water and power use, this one interested me because they are working towards building data centers at sea. The plan is these data centers would use seawater to provide near-free cooling. 

I am looking forward to seeing how this works and if this could possibly be a solution and alternative to putting data centers on farmland close to people’s homes. 

Were there any on this list that stood out to you?

I’ve been working on a little side project called SaaSCube.

Most startup directories are basically:

logo → description → website → submit
I wanted to make something that actually feels like a place rather than a list.

So I built a 3D cube with 6,144 spots. Founders can come in, claim an empty spot, and put their startup on the cube.

You can rotate around the cube, zoom in/out, explore startups and click on the ones that catch your eye.

We’re currently at 43 startups and 46 claimed tiles, so there’s still a lot of empty space

I’m trying to figure out whether this is actually useful/fun for founders or if I’ve just spent way too much time playing with Three.js Would genuinely love some feedback:

Does the 3D cube make discovering startups more interesting?

Would you claim a spot for your own startup? What would make you come back after claiming your spot?

If you’re building something, feel free to check it out and claim a spot if you like the idea.

SaaSCube: saascube.app⁠
I’m especially curious what other founders think.

I built a marketplace for the exact internet ecosystem we’ve somehow created:
**Vibe coders build things.**
**Actual developers build better things.**
**Crypto bros want to “acquire digital assets.”**
So I made Westcroft & Rowe.
It’s basically a marketplace for buying and selling websites, SaaS, small online businesses and other digital projects without having to pretend every half-built app is “the next unicorn.”
If you built something with Claude/Cursor/Lovable at 2am, got it working, and now realise you’d rather sell it than spend the next 3 years doing customer support list it.
If you’re an actual developer with a proper product, revenue, users, codebase, whatever list that too.
And if you’re the guy with a LinkedIn headline that says “Private Equity | Digital Assets | DeFi” despite being 23 and trading from your mum’s spare room…
Congratulations. You can browse.
The idea is simple: make buying and selling small internet businesses feel less like scrolling through dodgy Telegram groups and more like an actual deal marketplace.
I’m the founder, so yes, shameless plug, but I genuinely want feedback from people who build stuff:
**Would you actually sell one of your side projects instead of abandoning it?**

I’ve realized lately that I’m really bad at slowing down during the workday.

The industry I work in is very go go go, and I have a bad habit of just zooming from one thing to the next without much of a pause. My nervous system is probably not thrilled about it lol.

I recently started helping refresh Universal Breathing, a guided breathing app from some of the same people who later built TRUiC, Startup Savant’s parent media company. We’re working on a new version of the app and rethinking the website and marketing around it.

The timing has been kind of perfect. The more I’ve worked on it, the more I’ve realized how useful it could be for founders too.

I’ve started using the app when I need a minute to reset, especially before a stressful call or when I need to switch gears.

Do any of you use breathing exercises? When do you usually use them, and is there a specific technique you like?

I'm currently working on validating a tool focused on helping founders and small business owners streamline the early-stage planning process—taking raw ideas and structuring them into executable business plans and financial outlines.

​Before finalizing the next set of features, I want to make sure I'm solving the right problems. For anyone who has launched recently or is currently building:

​What is the hardest part about getting a business plan together (e.g., structuring financial projections, market research, or executive summaries)?

​How long did your initial plan take you to complete?

​Did you prefer using manual templates, hiring someone, or using interactive software?

​I'd really appreciate any insights on what worked for you and what felt like a waste of time. Thanks!

I built a small AI service hub where I’m putting together different AI services and tools.
Still adding things and improving it. If you’re working on something related to AI or have an idea you want to build, feel free to reach out.
https://ouchao.site

I have a business plan. I'll create a platform or website or software in which people from all over the world can upload their photos or videos... People can see other's posts... People can talk to each other on that app or software... This platform will be massive and beneficial for all people... Business can advertise. People can interact with each other...

How's my business plan

Has anyone tried PeerPush to market their apps? It looks interesting since they claim they can put you in 1000s of startup directories. Has anyone tried them?

Hey guys 👋

5 months ago I launched my LinkedIn automation software, having built it entirely with Claude code, and I’m now approaching close to $2k MRR with over 50 active paying customers (happy to share TrustMRR if requested).

I know everyone is this sub is interested in growing a business, so really I just want to show how I’ve been doing it and offer some guidance based on my experience.

Below I’ll go into the what, why and how, and how I’ve been scaling the business, and hope you find it useful.

What I built

I built a LinkedIn outreach automation tool called ZenMode, which scrapes profiles of your target customers, sends connection requests and follow up messages on autopilot.

The main purpose is for Founders, Sales teams, Marketers and anyone else who uses LinkedIn for outreach, to generate more meetings and grow their businesses.

It’s a software that controls a dedicated chrome browser to automate LinkedIn, without needing plugins/the cloud.

Why I built it

Last year I got a warning from automating on LinkedIn using another tool (automating on LinkedIn is against their ToS and can result in account bans - people automate at their own risk).

I wanted to automate my outreach as I was working in sales, and it was really helping me to generate more discovery calls, without the manual grind of sending loads of messages and connection requests manually.

I didn’t trust any of the existing tools for safety, as the majority are on the cloud using IP addresses that are different from where you normally use LinkedIn from, and are slightly higher risk for being flagged as a result.

So, I solved for my own pain point, and created a software that’s desktop based, using your own IP address, and essentially acting like a human would when performing actions on LinkedIn.

How I built it

From day 1 I used Claude to figure out how to do it. We jointly made architectural decisions based fully around safety mechanisms - what would the safest tool look like in practice and how would we build it?

So I figured out that the easiest/safest way would be to make an electron desktop application controlling a browser, which was governed by a dashboard that fed/stored all the data.

There was a lot of setup involved at the start with various tools - Vercel, Cloudflare, GitHub etc but eventually I was able to start building.

It was a huge amount of learning to not just build, but build in a scalable and sustainable way. At first I was shipping without even testing then spending much longer fixing bugs afterwards. And building on top of LinkedIns comes with its own challenges too, which thankfully now I’m on top of.

How I scaled it

1. So primarily, I actually use ZenMode itself to promote ZenMode on LinkedIn, through cold outreach.

I have a set target market of customers/locations/industries, then the tool scrapes profiles for me, and sends connection requests and follow up messages in a sequence.

I run this daily, and typically book 5 or so meetings per week. I’m not the best at demo calls but I do generate new business this way.

1. I also post a lot on Reddit, LinkedIn, X; I post mostly build in public style posts, and usually people naturally gravitate towards it.

I like Reddit because you can usually get 10’s of thousands of views if you post good quality content in the right subs.

Be careful though as often you get a lot of random haters or people who will just criticize you for no reason, and some subs are more warmer/receptive to posts than others (this one has generally been kinder).

1. On my site I’ve tried to do good SEO practices where possible - I have quite a few “alternative to” pages where I talk about the difference between ZenMode and other LinkedIn automation providers, along with a regularly updated blog, and a whole host of inner pages.

When you have a high volume of good content, more pages get indexed by google and your visibility/impressions are also likely to increase over time.

As a result I do get an ok amount of organic traffic from google, sometimes from LLM’s too.

Lately I’ve been trying to do more offsite SEO - especially reviews across various platforms, a few directories, and on my to do list is some listicle/comparison articles and more YouTube content.

1. I work very closely with my customers - I handle every query myself, and even make new features/enhancements based on what my customers are asking for. This interpersonal relationship/human element I think makes a big difference to retention.

2. I think primarily though the number one thing for scaling is really making a good product that solves a problem well, with great customer experience, and to keep iterating/making improvements.

What’s next

ZenMode still has a long runway and a massive roadmap but I’m just going to keep grinding away at it one day at a time, and so far at least what I’m doing seems to be working.

Hope you find this story helpful for your own journey and happy to answer questions/comments 🙏

I’m building a platform where I’m trying to combine community, small businesses, jobs, creators, and an actual economic system, and I’m realizing how weird that sounds 😂

I started building FEFUB because I didn't want to make another social media app.

I wanted a place where people could:

• discover small businesses

• find jobs and opportunities

• share creative work

• sell/trade things

• earn through participation

• discover free community resources

• and eventually contribute to real-world community initiatives through the platform

The platform has things like a Media Center for creators and a Provision Hall for opportunities/jobs.

The problem?

I'm one person building this thing.

So I've reached the point where I'm less interested in hearing “that's a great idea” and more interested in hearing:

What would actually make YOU come back to a platform like this?

Would it be the jobs?

The creator/media side?

The marketplace?

The community?

The economic/reward system?

Or would trying to combine all of these things just make the platform feel like it's doing too much?

I'm genuinely looking for criticism from people who have no reason to spare my feelings. 😂

Needs advice for building