Communications & messaging
698 APIs for SMS, voice, video calls, chat, notifications, or social communication.
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321 APIs added in the last 30 days.
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698- TR23 operations14 revisionsTransmit Message API@kudosity/transmit-message-api
Messaging: send SMS, MMS, RCS and WhatsApp messages, register senders and manage webhooks
- VA145 operations166 revisionsVapi API@vapiai/vapi-api
Voice AI: build assistants, place calls, run campaigns and manage phone numbers
- TW1 operation226 revisionsTwilio - Chat@twilio/twilio-chat
Messaging: manage chat channels, including updating channel details within a service
- TW54 operations180 revisionsTwilio - Ip_messaging@twilio/twilio-ip-messaging
Messaging: manage chat services, channels, members, messages, users, roles and webhooks
- TR121 operations90 revisionstraQ API@traptitech/traq-api
Chat: manage channels, messages, users, bots, webhooks, files and OAuth2 tokens
- BI529 operations97 revisionsBird API@messagebird/bird-api
Email, SMS and WhatsApp messaging: send messages, manage contacts, audiences, templates and delivery analytics
- PH333 operations491 revisionsPhoenix API by Phone.com@phone/phoenix-api-by-phone-com
Telephony: manage calls, numbers, SMS, voicemail, faxes, devices and call logs
- SP209 operations140 revisionsspreed-full@nextcloud/spreed-full
Chat, video calls and breakout rooms: manage rooms, messages, polls, bots and recordings
- SM5 operations220 revisionsSMS API@apideck-libraries/sms-api
SMS: send, list, update and delete text messages and their delivery status
- XQ218 operations408 revisionsXquik API@xquik-dev/xquik-api
Read and automate X: search posts, look up users and communities, schedule tweets and manage webhooks
- RE111 operations61 revisionsRetell SDK@retellai/retell-sdk
Voice AI agents: build and test call agents, phone numbers, chat, and knowledge bases
- TE1,547 operations340 revisionsTelnyx API@team-telnyx/telnyx-api-2
Telephony: place calls, send SMS and MMS, manage phone numbers, SIP trunks and conferences
- AP199 operations90 revisionsApache Answer@apache/apache-answer
Q&A community: manage questions, answers, tags, badges, follows, reports and AI conversations
- TW103 operations91 revisionsTwilio - Conversations@twilio/conversations-v1
Messaging: create conversations, manage participants, send messages and read delivery receipts
- TA28 operations76 revisionsTamTam Bot API@tamtam/tamtam-bot-api
Messaging: send, edit and pin messages, manage chats, members and bot subscriptions
- VO137 operations21 revisionsvolai REST API@volai/volai-rest-api
Phone numbers, calls and SMS, plus AI voice agents for placing and receiving calls
- KA217 operations15 revisionsKaiCalls Public API@kaicalls/kaicalls-public-api
AI voice agents: answer calls, manage leads, campaigns, SMS, meetings and call analytics
- SP9 operations96 revisionsspreed-federation@nextcloud/spreed-federation
Chat and video rooms: list, accept or decline federation invites, join or leave rooms, fetch user avatars
- TW7 operations182 revisionsTwilio - Pricing@twilio/twilio-pricing
Pricing: look up messaging, voice and phone number rates by country
- AW67 operations4 revisionsAwrAIter REST v1@awraiter/awraiter-rest-v1
Telegram channel tools: check duplicates, draft and schedule posts, and read channel stats and insights
- TW1 operation125 revisionsTwilio - Messaging@twilio/twilio-messaging
Messaging: send typing indicators and look up WhatsApp Business Accounts for OTT channels
- WP158 operations97 revisionsWPPConnect API Rest@wppconnect-team/wppconnect-api-rest
WhatsApp automation: send messages, manage chats, groups, contacts, labels and status stories
- SP356 operations194 revisionsSpacebar Server@spacebarchat/spacebar-server
Chat platform: manage webhooks, user settings, channel attachments and avatar decorations
- 3G41 operations6 revisions3GPP Scout API@3gppscout/3gpp-scout-api
Telecom standards: search 3GPP specs, TDocs, meetings, RFCs and proposal comparisons
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