Expands as you type · AI rewrites · Push-to-talk dictation

The AI text expander that types for you

Snippets expand inline as you type — or fire on a hotkey. Rewrite with AI commands. Dictate everywhere — on Windows, Mac & Linux.

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14-day trial · All features · No credit card · Native desktop app

Learn more about Snippets →

Two ways to expand a snippet — your choice

Lightning Assist supports both modes side-by-side. Pick what fits each snippet.

Auto-expand as you type

Type a short trigger like ;hi and watch it expand inline — instantly, no hotkey needed. The snippet replaces your trigger the moment you finish typing. Perfect for high-frequency phrases.

;hi → expands inline as you type

Trigger on a hotkey

Prefer deliberate control? Type your trigger anywhere, then press your hotkey to expand it. Same snippets, explicit activation — ideal for shared shortcuts you don't want to misfire.

;hi + hotkey → expands on demand

Configure inline, hotkey, or both per snippet — switch any time in Settings.

Same expansion everywhere — pick where you type:

Below, each app has its own mini steps (type → trigger → filled).

Type ";email" in To — Lightning Assist recognizes it instantly and fills the fields automatically. Or tap "Simulate full flow".

Type ";email" in the To field (semicolon + abbreviation).

New message

Subject

Works the same in Outlook, Slack, VS Code, terminal, and anywhere you type.

Loved by Professionals

5 / 5·Verified reviews on G2

Real reviews from verified users on G2.

Sorin T.
Technical Lead

“Setup was straightforward, and the in-app help was enough to get me up and running. The quick access (Alt+C) is a game changer: I can search as I type and immediately run the right snippet, without digging through menus. It's been stable for me, and the hotkeys work consistently with no lag. That reliability matters when you're moving fast and switching between snippets and AI.”

Nicushor O.
Technical Lead

“I use Lightning Assist mainly for terminal commands and Slack shortcuts, and that's where it works best for me. The quick access window feels like a command palette for the whole system, so instead of searching through shell history or notes, I can trigger complex commands instantly. It saves time and reduces small mistakes when working with repetitive Git, Docker, deployment or SSH commands. For Slack, having shortcuts for common messages and responses removes a lot of repetitive typing and keeps communication fast without feeling automated.”

Marian I.
Senior JavaScript Engineer / Tech Lead

“This has taken my overall productivity to the next level. It helps not only in my professional work—emails, code snippets, and templates—but also in my personal use. The recent AI updates have really improved the experience and made it even more useful day to day.”

How Much Time Could You Save?

Adjust the sliders to match your workflow — see your savings update in real time.

Quick-fill by role:

Your Typing Habits

Repetitive tasks per day

580

Average time per task

15s2 min

Percentage of tasks you would automate

30%95%

Working days per week

Your Estimated Savings

min / day

4.5

hrs / week

19.5

hrs / month

29.3

workdays / year

Conservative estimate — actual savings are typically higher.

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Built-In AI That Actually Helps

Select text and rewrite it. Hold a key and dictate. Run custom AI prompts with a hotkey. No browser tabs, no copy-pasting into ChatGPT.

Works in Gmail, Slack, Zendesk, Terminal & Any App

Create snippets for Gmail, Slack, Zendesk, Outlook, Word, Notion — any app on your desktop. Type a keyword, press a hotkey, your response appears instantly.

Need it in the terminal too? Lightning Assist has dedicated terminal snippets for PowerShell, Bash, CMD, and more.