Sleezr

Move between environments without opening a terminal

Working across local, staging, and client projects? Keep an environment ready for each one, apply it, and flush DNS from the same app.

Sleezr lets you manage your hosts file on Windows, macOS, and Linux without opening a terminal. Create an environment for each project, apply it, flush DNS, and return to a backup when you need to. One payment, with lifetime updates included.

Start free trial Buy Sleezr - 4.99 €

For developers moving between projects·3-day trial, then one payment·Windows · macOS · Linux·1 device, with Team for more

Sleezr - staging

● v1.2.0

stagingStaging

Team pre-production · 347 entries

Search entries…

localhost127.0.0.1# system

app.staging.local127.0.0.1# acme

ads.tracking.example0.0.0.0# blocked

db.staging.local10.0.0.4# db

elasticsearch.local192.168.1.10# search

+ 342 more entries

unsaved changes

08what people say

They no longer rewrite their hosts file for every project.

For developers who switch environments every day

Environment switching
“No more permission detours or manual rewrites between clients. Managing 50+ local domains is predictable again. Environment switching paid for itself.”
David C.
Senior Frontend Developer
DNS flush
“The one-click DNS flush alone is worth it. I used to forget the cache step and lose time debugging. Now it's one click after each apply.”
Marcus J.
Full Stack Developer
Team setup
“Our team moved to Sleezr. New developers get a working local setup much faster, and "wrong hosts still active" support requests dropped.”
James R.
Engineering Manager

Move to the right environment without reopening the terminal.

Try Sleezr free for 3 days. If it makes your work easier, buy it once and keep lifetime updates.

Start free trial Buy Sleezr - 4.99 €

11faq

Questions before you get started?

Still deciding? .

Can I try Sleezr before buying?

Yes. Start a 3-day free trial with full features - no credit card. Enter your email here to register, download Sleezr, then activate in the app with the same email. You can also try the interactive demo here before installing.

How much time will Sleezr actually save me?

It depends how often you switch environments. People who juggle clients or staging setups usually replace a multi-step terminal ritual with a short, repeatable apply. Fewer mistakes, less DNS debugging.

What is Sleezr and why do I need it over terminal?

Sleezr is a visual hosts file manager. Instead of juggling sudo, comment blocks, and hidden typos between environments, you get named setups, controlled applies, backups, and DNS tools in one place.

Why pay when there are free tools?

Free tools often stop at basic editing. Sleezr adds named environments, automatic DNS flush, IP validation, backups, and a consistent app across Windows, macOS, and Linux, for a single one-time purchase with no subscription.

Is there a subscription fee or is it a one-time purchase?

It's a one-time purchase. You pay once and keep access, with updates included.

What happens if I make a mistake? Can I restore my hosts file?

Yes. Sleezr creates a backup before applying changes, so you can restore your hosts file quickly if needed.

How many entries can I manage and does it handle large hosts files?

Unlimited. Sleezr stays fast with instant search, whether you have 10 lines or 1000+.

Does the DNS flushing feature really work?

Yes. One click runs the correct DNS flush commands for your operating system, so changes take effect without manual steps.

Which operating systems does Sleezr support?

Sleezr is a native desktop app for Windows, macOS, and Linux. After purchase, you receive download links for all supported platforms.

Can I use Sleezr on multiple devices?

A Solo license binds to one machine at a time. Use Change computer in Account (email code) when you replace hardware — limited to prevent sharing. Dual covers two machines for one person on the same email. For more devices or teammates, buy a Team license (2+ seats). Team admins can also release a device from the Team dashboard.

What support do you offer and how do I get help?

All licenses include email support, plus documentation for common workflows and troubleshooting.