A toolbox and reference hub for indie hackers
Free tools, calculators, directories, and reference data to help you build and run projects online.
Tool catalogs
DNS tools
Check public DNS records and read exact resolver response states with compact DNS troubleshooting tools from stack127.
8 toolsdomain tools
Free domain tools that answer straight from the registry: who registered a domain, when it was created, when it expires, whether a name is available, and what its status codes mean.
11 toolsstorage tools
Calculate array capacity from the drives and topology you actually plan to use. Each tool keeps theoretical capacity, implementation estimates, and observed data separate.
15 toolsKDP tools
Set up, check, and price an Amazon KDP book, from cover size and listing details to royalties and payment dates.
15 toolsHosting and cloud tools
Plan self-hosted app resources, inspect network details, and check server rules and proxy paths.
6 toolsDeveloper and system tools
Check file permissions, container configuration, sync filters, and system mappings before deployment.
6 toolsProductivity tools
Make a focused keyboard shortcut reference from the apps and actions you use.
1 toolSaaS tools
Use SaaS calculators to examine recurring revenue, retention, churn, margin, and acquisition cost from your own monthly figures.
10 toolsMore to explore
Keyboard shortcuts
Browse task-based keyboard shortcuts for popular apps, editors, browsers, terminals, and operating systems on Windows, macOS, and Linux.
- apps
- 218
- shortcuts
- 13,322
self-host apps
Browse self-hosted apps by category, Docker support, resource needs, project health, and official links.
- apps
- 4,931
cli apps
Browse verified terminal apps by type, category, platform, install method, pricing, license, and maintenance health, with official links.
- apps
- 309
Domain status codes
What every domain status code means in plain terms, who set it, whether you can remove it yourself, and why clientHold or serverHold takes a site offline.
- status codes
- 23
labs
Explore the open tools, datasets, and self-hostable projects built by stack127 Labs.
- projects
- 3
self-hosting for beginners
Self-hosting means running your own apps on a computer you control. Learn what it is, why people do it, and how to start, no Linux or Docker knowledge needed yet.
- lessons
- 16
TLD Directory
Every top-level domain that exists, with its type, the organisation that operates it, whether it is signed with DNSSEC, and whether registration data can be looked up.
- domain extensions
- 1,438
Launch directories
Find places to submit a product. Compare cost, review time, link type, and eligibility before you start.
- places
- 142
- categories
- 8
Platform fees
Compare selling fees, start costs and payment charges across app stores, digital products and creator platforms. Choose a category and compare sourced rates.
- platforms
- 543
- categories
- 49
software licenses
What MIT, AGPL, SSPL, Elastic, BSL, and other licenses mean when you self-host an app or publish one. Practical notes for users and creators.
- licenses
- 32
Start here
- Publishing on Amazon KDP? Work out your royalties.
- Running a SaaS? Check your MRR and churn.
- Choosing where to sell? Compare platform fees.
- Working on a website? Check its domain.
- Looking for a terminal app? Browse CLI apps.