A browser for devs
A browser for devs
A browser for devs
Isolated sessions, instant test data, real email
addresses & tools - built right in
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Core features
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Core features
Built for how you work
Every feature solves a real problem.
Unlimited Test Users
Stop logging in and out
Click a user, switch instantly. Completely isolated sessions - separate cookies, storage, and auth. No logout needed.
Session Data Persists
Import your Chrome
setup in one click
Import your Chrome
setup in one click
Import your Chrome
setup in one click
No manual work. Choose which Chrome profile to import and we'll carry over your bookmarks and/or saved passwords - so you're up and running straight away
No manual work. Choose which Chrome profile to import and we'll carry over your bookmarks and/or saved passwords - so you're up and running straight away
Import profile
Arron (G)
Add-ons
Add-ons
AI Auto-Fill
Stop typing test data
One click fills every input with realistic test data. AI generates names, emails, addresses, credit cards - whatever the form needs.
Fill individual fields or entire forms
Real Inbox
Real email for every test user
Each user gets a working inbox. No juggling Mailinator tabs or temp email services. Test verification flows, password resets, and notifications without leaving the browser.
One click open
A dedicated browser for your work
A dedicated browser
for your work
A dedicated browser for your work
Email Integration
Access your inbox in one click
Access your inbox in
one click
Connect your email account once and it's always there when you need it. Open, read, and manage your emails without ever leaving the browser.
Connect your email account once and it's always there when you need it. Open, read, and manage your emails without ever leaving the browser.
Works with Gmail, Outlook, Yahoo, iCloud & more
Works with Gmail, Outlook, Yahoo, iCloud & more
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Use cases
Workflows.
Stop hunting for the right test user.
Workflows.
Stop hunting for the right test user.
Name sessions by what you're building. 'Signup flow', 'Checkout', 'Password reset'. Always one click away from testing your feature.
Name sessions by what you're building. 'Signup flow', 'Checkout', 'Password reset'. Always one click away from testing your feature.
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Benefits
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Benefits
Browser. Devser 👋
Browser. Devser 👋
Browser. Devser 👋
Truly isolated sessions
Each user has separate cookies, storage, and cache. No cross-contamination, ever.
Truly isolated sessions
Each user has separate cookies, storage, and cache. No cross-contamination, ever.
Truly isolated sessions
Each user has separate cookies, storage, and cache. No cross-contamination, ever.
Organize with workflows
Group test users by feature. Password reset, checkout, admin - test without the chaos.
Organize with workflows
Group test users by feature. Password reset, checkout, admin - test without the chaos.
Organize with workflows
Group test users by feature. Password reset, checkout, admin - test without the chaos.
Your data stays local
Test users and session data live on your machine, not our servers. 100% private by default.
Your data stays local
Test users and session data live on your machine, not our servers. 100% private by default.
Your data stays local
Test users and session data live on your machine, not our servers. 100% private by default.
Switch in milliseconds
Click a user, instantly switch. No logout, no waiting, no friction.
Switch in milliseconds
Click a user, instantly switch. No logout, no waiting, no friction.
Switch in milliseconds
Click a user, instantly switch. No logout, no waiting, no friction.
Full DevTools included
Inspect, debug, and profile with the developer tools you already know.
Full DevTools included
Inspect, debug, and profile with the developer tools you already know.
Full DevTools included
Inspect, debug, and profile with the developer tools you already know.
Password manager
Store and autofill passwords across all your websites - no memorising required.
Password manager
Store and autofill passwords across all your websites - no memorising required.
Password manager
Store and autofill passwords across all your websites - no memorising required.
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Three reasons devs love Devser
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Three reasons devs love Devser
Made for developers.
Test, debug, and ship faster.
Full DevTools built in
Inspect elements, debug JavaScript, monitor performance. All the developer tools you rely on, ready to use.
Full DevTools built in
Inspect elements, debug JavaScript, monitor performance. All the developer tools you rely on, ready to use.
Full DevTools built in
Inspect elements, debug JavaScript, monitor performance. All the developer tools you rely on, ready to use.
Create a temporary user
in one click
Need to test something quick? One-click throwaway session with credentials and real email. Use it, close it, it's gone.
Create a temporary user
in one click
Need to test something quick? One-click throwaway session with credentials and real email. Use it, close it, it's gone.
Built-in eye dropper
Pick any color from any page and instantly copy the HEX or RGB value.
Built-in eye dropper
Pick any color from any page and instantly copy the HEX or RGB value.
Built-in eye dropper
Pick any color from any page and instantly copy the HEX or RGB value.
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Add-ons
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Add-ons
Devser is free 💛
Premium add-ons available for developers.
Devser is free 💛
Premium add-ons available for developers.
Devser is free 💛
Premium add-ons available for developers.
Fill AI (add-on)
$5
/month
Features
AI auto-fill and AI-generated data for forms.
Unlimited usage
Unlimited Emails (add-on)
$5
$5
/month
Features
Unlimited received emails across all your @email.devser.io addresses
Fill AI (add-on)
$5
/month
Features
AI auto-fill and AI-generated data for forms.
Unlimited usage
Unlimited Emails (add-on)
$5
$5
/month
Features
Unlimited received emails across all your @email.devser.io addresses
Fill AI (add-on)
$5
/month
Features
AI auto-fill and AI-generated data for forms.
Unlimited usage
Unlimited Emails (add-on)
$5
$5
/month
Features
Unlimited received emails across all your @email.devser.io addresses
More coming soon
Loved by developers
Marcus T., Frontend Developer
Switching between test users used to mean logging out, clearing cookies, opening incognito. Now I just click. Honestly can't believe I worked without this
Priya S., Full-Stack Engineer
The real inbox feature alone is worth it. I was juggling four Mailinator tabs to test email flows. Now every test user just… has an email. It's so obvious in hindsight.
Joel R., QA Engineer
I named my sessions 'signup flow', 'admin user', 'expired trial' and they're all one click away. My testing workflow has never been this clean.
Dan K., Indie Developer
AI Auto-Fill is stupidly useful. I was manually typing fake names and card numbers dozens of times a day. Now I hit one button and the whole form fills itself.
Sophie M., Software Engineer
The isolated sessions are rock solid. No bleed between users, no weird cache issues, no 'why is this still logged in'. It just works exactly how you'd want it to.
Ravi C., Web Developer
I imported my Chrome profile in about ten seconds and had all my bookmarks and passwords ready. Zero setup friction. I was testing within a minute of downloading it.
Loved by developers
Marcus T., Frontend Developer
Switching between test users used to mean logging out, clearing cookies, opening incognito. Now I just click. Honestly can't believe I worked without this
Priya S., Full-Stack Engineer
The real inbox feature alone is worth it. I was juggling four Mailinator tabs to test email flows. Now every test user just… has an email. It's so obvious in hindsight.
Joel R., QA Engineer
I named my sessions 'signup flow', 'admin user', 'expired trial' and they're all one click away. My testing workflow has never been this clean.
Dan K., Indie Developer
AI Auto-Fill is stupidly useful. I was manually typing fake names and card numbers dozens of times a day. Now I hit one button and the whole form fills itself.
Sophie M., Software Engineer
The isolated sessions are rock solid. No bleed between users, no weird cache issues, no 'why is this still logged in'. It just works exactly how you'd want it to.
Ravi C., Web Developer
I imported my Chrome profile in about ten seconds and had all my bookmarks and passwords ready. Zero setup friction. I was testing within a minute of downloading it.
Loved by developers
Marcus T., Frontend Developer
Switching between test users used to mean logging out, clearing cookies, opening incognito. Now I just click. Honestly can't believe I worked without this
Priya S., Full-Stack Engineer
The real inbox feature alone is worth it. I was juggling four Mailinator tabs to test email flows. Now every test user just… has an email. It's so obvious in hindsight.
Joel R., QA Engineer
I named my sessions 'signup flow', 'admin user', 'expired trial' and they're all one click away. My testing workflow has never been this clean.
Dan K., Indie Developer
AI Auto-Fill is stupidly useful. I was manually typing fake names and card numbers dozens of times a day. Now I hit one button and the whole form fills itself.
Sophie M., Software Engineer
The isolated sessions are rock solid. No bleed between users, no weird cache issues, no 'why is this still logged in'. It just works exactly how you'd want it to.
Ravi C., Web Developer
I imported my Chrome profile in about ten seconds and had all my bookmarks and passwords ready. Zero setup friction. I was testing within a minute of downloading it.
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FAQ
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FAQ
Questions? We've got answers.
Is Devser free?
Can I migrate from Chrome?
How does Devser compare to Chrome profiles or Arc browser?
Is my data private and secure?
What platforms does Devser support?
Does Devser work offline?
Is Devser free?
Can I migrate from Chrome?
How does Devser compare to Chrome profiles or Arc browser?
Is my data private and secure?
What platforms does Devser support?
Does Devser work offline?
Stop wasting time logging in and out
Free for 14 days. Download in seconds. Start testing immediately.
