Instant Username Search alternative
Instant Username Search, at instantusername.com, checks whether a handle is free on popular social sites while you type. It is quick and simple. This page covers how it works and when a deeper checker is worth the extra seconds.
Username availability (search as you type). Project: instantusername.com · Last reviewed 2026-10-13
What is Instant Username Search?
The site says it checks whether your username is available on more than 100 social media sites, with results appearing as you type. There is nothing to install and no account to create.
Earlier versions were open source under GPL-3.0. That original GitHub repository is now archived, so the code there may not match the current site.
How to use Instant Username Search
- Open instantusername.com and start typing a handle.
- Watch the list update as you type.
- Open any site you care about to confirm, because a quick check can miss blocks and reserved names.
Instant Username Search vs WhatsMyName Apps
| Feature | Instant Username Search | WhatsMyName Apps |
|---|---|---|
| Sites | 100+ social media sites | 3,166 sites, merged from the WhatsMyName, Sherlock and Maigret lists |
| Speed | Results as you type | Results stream in live after you search |
| Result states | Available or taken | Four statuses: found, not found, blocked, unknown |
| Domains | Not confirmed in our review | .com, .net, .org, .io, .us, .app and .dev through public RDAP |
| Export | Not confirmed in our review | JSON and CSV (no PDF) |
| Open source | Original repository GPL-3.0, now archived | No |
| Price | Free | Free, no sign-up |
Based on Instant Username Search's own documentation as of 2026-10-13. Tools change; the project page is the final word.
Pros and cons of Instant Username Search
Pros
- Very fast feedback while you type.
- Free, no sign-up, nothing to install.
- Clean single-page layout.
Cons
- Around 100 sites, so long-tail platforms are missed.
- Available or taken only; blocked checks are not called out separately.
- The public source repository is archived.
Who Instant Username Search is for
Instant Username Search is handy while you brainstorm handles and want instant feedback on big platforms. Once you have a shortlist, run it through a broader checker before you commit.
Try a username search in your browser
Free, no sign-up. Checks 3,166 sites; the username is not stored or logged.
Frequently asked questions
Is Instant Username Search free?
Yes. It is free and needs no account.
Is Instant Username Search open source?
Its original repository on GitHub was GPL-3.0 and is now archived, so it may not reflect the current site.
What is a good Instant Username Search alternative?
WhatsMyName Apps checks 3,166 sites, separates blocked and unknown checks from free names, and checks seven domain endings in the same search.
Related tools and guides
- Namechk: Username and domain availability
- Namecheckup: Username and domain availability
- UserSearch: Username search (web, freemium)
- Sherlock: Username search (CLI)
- All OSINT tools compared
- OSINT username search · Reverse username lookup · Platform username checkers
- Username OSINT for beginners
Names and trademarks belong to their owners. WhatsMyName Apps is independent and not affiliated with or endorsed by Instant Username Search or its authors.