Where team conversations get work done,
Zelple

Channels, DMs, threads, schedules, polls, and unified search. Bring your team's scattered communication into one messenger.

Windows · macOS · Linux desktop — iOS · Android apps on the App Store and Google Play

Features

Everything your team needs,
in one workspace

Messaging at the center, with schedules, polls, files, search, and AI summaries built in — no need to switch to other tools.

💬

Channels & direct messages

Organize conversations with topic channels and 1:1 or group DMs. Pin announcements, see read receipts, hide conversations, and keep notes in a private “Me” chat.

🧵

Threads & emoji reactions

Keep channels tidy by gathering replies into threads, and react quickly with emoji. Files can be attached in threads too.

✍️

Rich text editor

Markdown formatting, @mention autocomplete and @all, replies and quotes, and editing sent messages — an editor that makes writing a pleasure.

⏰

Scheduled messages

Write now, send later. Send times follow your organization’s time zone, suggested times follow working hours, and every scheduled message is managed in one list.

✨

AI catch-up on unread messages

When unread messages pile up, AI summarizes what you missed — in the side panel on desktop and a sheet on mobile. Only conversations you can already read are summarized.

⭐

Favorites & tidy conversations

Pin the channels and DMs you use most to the top. Favorites are saved to your account, so they follow you across devices.

🗓️

Schedules

Create events inside a channel and assign attendees. Recurring events are supported, and reminders go out at the time you set. The mobile app offers weekly and monthly views.

🗳️

Polls

Open a poll right in the channel and watch results update in real time. Add options and set a closing time for automatic wrap-up.

📎

File sharing

Every file, whatever its size, is sent reliably in chunks. Includes a photo gallery, image and video thumbnails, and built-in viewers for PDF, images, and Hangul (HWP) documents.

🔍

Unified search built for Korean

Search messages, file names, channels, and people all at once. Narrow results to the current conversation, and rely on Korean morphological analysis for accurate matches.

🔔

Notifications, only as much as you want

Turn notifications on or off globally or per conversation. Received notifications are kept on your account, so you can pick up where you left off on any device, and tapping one takes you straight to that message.

🏢

Workspaces & teams

Invitations and join approvals, ownership transfer, member permissions, and your organization’s time zone and working hours — run your workspace at any size.

🗑️

30 days to undo a mistake

Deleted channels and workspaces go to the trash. Restore them any time within 30 days; after that they are permanently removed automatically.

🌐

Multilingual

The interface is available in Korean, English, and Japanese. Everyone in the same workspace can use their own language.

🎙️

Meeting notes Coming soon

Record a meeting and Zelple turns it into notes — a transcript by speaker, an AI summary, and your team’s comments and feedback, all in one place.

Real-time

On every device, without missing a moment

A WebSocket-based real-time engine syncs messages, mentions, reactions, and read status instantly.

  • Multi-device sync — Send from desktop or mobile and it appears on every device instantly.
  • Offline push notifications — Devices that aren't connected get a push notification, decided smartly based on the device you were working on.
  • Background notifications — Even with the app in the background, you won't miss new messages, mentions, or event reminders.
  • Nothing lost on disconnect — When the network drops, you're told right on screen, and once it's back, the messages you missed are filled in automatically.
  • Presence — Available / Busy / Away / Offline: see your teammates' status at a glance.
Search

Unified search that excels at Korean

Finds the right results even when Korean particles and endings differ. A Korean morphological analysis engine searches across messages, files, channels, and people.

  • Morphological analysis — Searching "배포" (deploy) also finds "배포했습니다" (deployed).
  • Filter by type — Narrow results to messages, channels, or people.
  • Within a conversation — Search just the messages and file names in the channel or DM you're viewing.
  • Permission-aware results — You only see content from the workspaces and channels you belong to.
Schedule & Poll

Schedule meetings and gather opinions, right in the conversation

Schedules and polls are built into the messenger, so your team reaches decisions fast without extra tools.

  • Attendees and reminders — Invite attendees to an event and a real-time reminder goes out at the set time.
  • Recurring events — Weekly meetings, biweekly reviews, and other recurrence rules are supported.
  • Live poll results — Results update the moment a vote is cast, and the poll closes automatically at the deadline.
Security

Multi-layered security for your team's conversations

Work conversations are company assets. Zelple protects them in layers, from accounts and devices to stored data.

🔐

OTP two-factor authentication

Two-step verification with one-time passwords (OTP), set up in seconds with a QR code.

📱

Device binding

Login tokens are bound to the device, so a leaked token can't be used anywhere else.

⏱️

Session protection

30-minute access tokens with automatic renewal reduce the risk of theft, and idle sessions expire and require signing in again.

🗄️

Encryption at rest

Not just message bodies: names, emails, invite codes, and push tokens are all stored encrypted in the database.

🔒

App lock

Lock the mobile app with a PIN or fingerprint/face recognition. Step away without worry.

🙈

Notification privacy

Hide the sender and content in lock-screen notifications. Previews won't reveal what was said.

Sign up with email verification, or start right away with an account you already use.
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Platforms

Wherever you work

Windows, macOS, and Linux desktop apps and iOS and Android apps all share the same workspace.

🖥️ Desktop Available

Native desktop apps for Windows, macOS, and Linux. On macOS, also available from the Mac App Store.

  • Local message cache for instant loading on relaunch
  • Lives in the system tray with native desktop notifications
  • Link previews and built-in PDF, image, and Hangul viewers
  • Two UI styles: Default and Classic
  • Theme color selection and launch at startup
  • Open conversations directly with zelple:// deep links
Download

Download links are coming soon. To get started, contact your workspace administrator.

📱 Mobile Available

iOS and Android apps with the same features as desktop — get them on the App Store and Google Play.

  • The same workspaces, channels, DMs, and threads as desktop
  • Push notifications for mentions and messages anywhere
  • Weekly and monthly schedule views, polls, and unified search
  • Share photos, files, and links to Zelple straight from other apps
  • Protect the screen with PIN or biometric app lock
  • Scheduled messages and AI summaries of unread chats

Scan with your phone's camera

Under the hood

Built to stay steady as you scale

Zelple's backend is designed for high-volume traffic from the ground up.

Event-driven architecture

The API and data layers are decoupled through Kafka event streaming, so traffic spikes are handled without losing messages.

Horizontal scaling

Scale simply by adding server instances. Real-time messages are delivered correctly no matter which instance you're connected to.

Fault isolation

Failures are isolated between services, so a problem in search or other extras never affects core messaging.

Move your team's conversations to Zelple today

Creating a workspace and inviting your teammates takes only a few minutes.