SaaS ideas your next customers are already looking for
100 SaaS startup ideas for the people who said they'd pay, from agency owners to dentists. Micro SaaS ideas, AI SaaS ideas and B2B SaaS ideas: find yours, build it, sign them up.
Popular:
| # | Idea |
|---|
No idea matches this filter.
Pain points in business: what people struggle with
Search the problems to solve, as people described them on Reddit and other platforms, in their own words.
Popular:
| # | Pain point |
|---|
No pain point matches this filter.
Memory and State Leaks
Applications and services leak memory or state, causing crashes, slowdowns, and resource exhaustion that require restarts or manual intervention.
In their words
Can you reliably spawn 3–4 background agents in parallel ... without hitting concurrency locks?
The bottleneck is always scan time especially when the access window is only a few hours after closing.
We were throwing 504 errors during heavy traffic periods from it… so, a performance plugin was essentially degrading our performance during times of peak traffic
i am ready to pay and plug the LSP in nvim, because i use low-end-pc user, my pc is crying in corner when i open the IDE
At three tabs I notice sluggishness. The crosshair stops tracking the mouse crisply and chart switching slows down.
We traced a 30–50s Java desktop UI freeze to an interaction between JIDE table painting and a deep AWT event queue.
On a 10 GB file, the memory usage was absurd, and we spent more time fighting the GC than doing actual work.
I in my naiveté put whole state of multistep wizard form into URL... sometimes we simply get 414 and whole data are thus lost.
By the time I reached the guardrail layer, the budget had 50 ms left.
half the PC's in our environment have this database file exceeding 1gb
ensuring rock-solid data persistence so users never lose their state if a server goes down
The server trace says success while the browser shows a frozen answer
5min is wayy too slow, because sometimes I want to spent more than 5 min looking at a diff before choosing where to go next
there are so many low hanging fruits for optimization but no one has time to do them
backend and systems developers
Where they talk
- r/nextjs
- r/reactnative
- r/AI_Agents
- r/webdev
- r/rust
- r/LLMDevs
- r/sysadmin
- r/codex
Tools they use today
- Cloudflare
- Claude Code
- Redis
- Next.js
- Claude
- Vercel
- Codex
- Chrome
Why those fall short
- logging and I/O not controlled; memory leaks and stale processes persist
- Worker mode only removes boot cost; external I/O stays the bottleneck.
- Static state and $_ENV persist by design; nothing catches leaks before deploy.
- no generic threading solution, requires JS interop
- keys can drift, inconsistent, hard to know what to invalidate
Map of ideas
Drawing the map…