Telegram Web App.
More info & source code here: https://github.com/zhukov/webogram
The Telegram web-client is a free, fast and secure way to enjoy most of Telegram's features right in your web-browser.
It is always synced with the Telegram app on your mobile device, which makes it a perfect tool for messaging and file sharing.
Our source code is open, so everyone can make a contribution.
Introducing Bot API 2.0, the biggest update to our bot platform since June 2015.
New inline keyboards with callback, 'open URL' or 'switch to inline mode' buttons help create seamless interfaces.
Bots can now update existing messages on the fly as you interact with them.
Prepare for the rise of location-based bots: all bots can now ask users to share their location.
Inline bots can now send all attachments supported in Telegram (videos, music, stickers, files, etc.).
Try out these sample bots to see what's coming your way soon: @music, @sticker, @youtube, @foursquare
Check out the Telegram Blog for more info.
New quick forwarding in channels (click on the date in a message to try this out).
Inline bots: A new way to add bot content to any chat. Type a bot's username and your query in the text field to get instant results and send them to your chat partner. Try typing `@gif dog` in your next chat. Sample bots: @gif, @wiki, @bing, @vid, @bold.
Improved GIFs: 20x faster sending and downloading, nice animated progress
Click on message date to reply (or to forward from channels).
Preview images before sending when pasting from clipboard.
Improved formatting for copy-pasted history fragments (date, time and sender names inserted automatically).
Unread counters for muted chats now colored in gray.
Improved previews for sticker sets: Click on a sticker to view the whole set, click on stickers in a set to send right away, added a 'Share' button.
Groups that have reached their capacity of 200 users can be upgraded to supergroups of up to 1,000 members.
Improved message forwarding.
Added view counter to messages from channels.
New emoji and sticker menu, tabs for sticker packs.
Introducing Channels – a great new way to broadcast your messages to unlimited audiences.
Check out the Telegram Blog for more info
Improved performance in Safari on OS X El Capitan.
Added formatting for fixed-width code, surround text with `single backticks` for inline text and ```triple backticks``` for blocks of pre-formatted text.
New bot API, free for everyone. If you're an engineer, create your own bots for games, services or integrations.
Improved Stickers support: now stickers are loading much faster.
Install and share custom sticker sets like this one: telegram.me/addstickers/Animals
If you're an artist, create custom sticker sets using our @Stickers bot.
Invite links for group chats
'Listened' status for voice messages
Places in locations (venues, landmarks)
Get rich link summaries for tweets, YouTube videos, Instagram photos and other content.
View your active Telegram sessions (on desktop, tablet and mobile devices) and close specific sessions remotely.
Set up an additional password that will be required to log into your Telegram account.
Optimisation for screens with smaller Y-resolutions.
Supported Spotify URL embeds.
Mentions of the current user in group chats are now highlighted.
Reply to specific messages in groups.
Mention @usernames in groups to notify multiple users.
Revised notifications in groups: mentioned users and people you reply to will be notified (private chat notification settings apply in this case instead of group settings). Check out Telegram Blog for more info.
Setting to disable message preview
Full stickers support
Multisearch box: instantly find chats, usernames and messages
Emoji autocomplete: e.g., type :kiss in the message field to see the list.
Added 'typing' notification in chats list
Online members counter in group headers
New material design
@username mentions in messages are clickable and open a conversation with the user
Forward messages to multiple recipients
New viewer for photos, videos, documents.
Added Native Client module: dramatically improved encryption speed; Download and upload speed is now as high as in native applications.
Added embedded Instagram, Vine, YouTube, Soundcloud, Vimeo links.
Jump to selected spot when playing back audio.
Added unsupported media playback warning.
Added global user search to contacts list.
Added switch to mobile version on window resize.
Search can now find public users by username
Most popular emoticons shown in 'recent' when empty
New languages: Spanish, German and Italian are now available
New custom-made audio player
Perfomance improvements and bugfixes
Log in codes may be received in other Telegram apps
Partner's online status updates automatically
Added support for non-english hashtags in messages
Fixed invalid scrollbar width bug
Added automatic country code detection