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Communications Index
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The Top Communications Tools and Services Ranked By Stacks
Ranked by the number of tech stacks a tool is included in
1
Twilio SendGrid
8.72K
Stacks
Email Delivery. Simplified.
Transactional Email
Visit Website
2
Twilio
8.67K
Stacks
Bring voice and messaging to your web and mobile applications.
Voice and SMS
Visit Website
3
Amazon SES
8.04K
Stacks
Bulk and transactional email-sending service.
Transactional Email
Visit Website
4
Mailgun
6.64K
Stacks
The Email Service for Developers.
Transactional Email
Visit Website
5
Mandrill
4.42K
Stacks
Send transactional, triggered, and personalized email, then track results.
Transactional Email
Visit Website
6
Amazon SNS
1.22K
Stacks
Fully managed push messaging service
Mobile Push Messaging
Visit Website
7
WhatsApp
311
Stacks
A freeware, cross-platform messaging and Voice over IP service
Phone
Visit Website
8
OneSignal
300
Stacks
A high volume push notification service for websites and mobile applications
Mobile Push Messaging
Visit Website
9
OneSignal
300
Stacks
A high volume push notification service for websites and mobile applications
Mobile Push Messaging
Visit Website
10
Postmark
293
Stacks
Email delivery for web apps - done right.
Transactional Email
Visit Website
11
Telegram Bot API
291
Stacks
HTTP-based interface created for developers keen on building bots for Telegram
Chatbot Platforms & Tools
Visit Website
12
Firebase Cloud Messaging
233
Stacks
A cross-platform messaging solution
Mobile Push Messaging
Visit Website
13
Dialogflow
227
Stacks
Give users new ways to interact with your product by building engaging voice and text-based conve...
Chatbot Platforms & Tools
Visit Website
14
Mailjet
208
Stacks
Email delivery made easy
Transactional Email
Visit Website
15
Alexa
191
Stacks
A cloud-based voice service
Voice and SMS
Visit Website
16
Nexmo
170
Stacks
API for SMS, Voice and Phone Verification
Voice and SMS
Visit Website
17
Microsoft Bot Framework
159
Stacks
Connect intelligent bots that interact via text/sms, Skype, Slack, Office 365 mail and other popu...
Chatbot Platforms & Tools
Visit Website
18
Telegram API
146
Stacks
Build your own customized Telegram clients
Chat API
Visit Website
19
IBM Watson
141
Stacks
A question-answering computer system capable of answering questions posed in natural language
Chatbot Platforms & Tools
Visit Website
20
SparkPost
135
Stacks
Email Delivery and Analytics for Developers and Enterprises
Transactional Email
Visit Website
21
Messenger Platform
125
Stacks
Tools to help you build your bot and reach 900 million people around the world
Chatbot Platforms & Tools
Visit Website
22
Postfix
121
Stacks
A free and open-source mail transfer agent
Email Deliverability
Visit Website
23
SendBird
113
Stacks
A Complete Chat Platform, Messaging and Chat SDK and API
Communications SDK
Visit Website
24
LINE
91
Stacks
Get engaged in interactive conversations with LINE users
Communications SDK
Visit Website
25
Braze
89
Stacks
Customer engagement platform
Engagement/Lifecycle Marketing
Visit Website
26
Amazon Lex
87
Stacks
Build conversational voice and text interfaces, using the same deep learning technologies as Alexa
Chatbot Platforms & Tools
Visit Website
27
Nodemailer
87
Stacks
A module for Node.js applications to allow email sending
Transactional Email
Visit Website
28
Google Cloud Messaging
85
Stacks
Simple and reliable messaging to reach over a billion devices.
Mobile Push Messaging
Visit Website
29
Agora
80
Stacks
The Real-Time Engagement platform for devs to integrate voice & video chat, interactive live stre...
Voice and SMS
Visit Website
30
Agora
80
Stacks
The Real-Time Engagement platform for devs to integrate voice & video chat, interactive live stre...
Voice and SMS
Visit Website
31
Botpress
75
Stacks
Open-source conversational AI platform for enterprise automation
Chatbot Platforms & Tools
Visit Website
32
Botkit
72
Stacks
Building Blocks for Building Bots
Chatbot Platforms & Tools
Visit Website
33
RingCentral
72
Stacks
Cloud business phone systems that work the way you do.
Phone
Visit Website
34
Aircall
72
Stacks
The phone system for modern business
Phone
Visit Website
35
Api.ai
71
Stacks
Conversational interface platform for apps, devices, bots, and services.
Chatbot Platforms & Tools
Visit Website
36
Apple Push Notification Ser...
67
Stacks
A platform notification service
Web Push Notifications
Visit Website
37
Chatfuel
66
Stacks
Create chatbots easily — no coding required
Chatbot Platforms & Tools
Visit Website
38
Plivo
66
Stacks
API platform to build Voice & SMS Applications
Voice and SMS
Visit Website
39
Urban Airship
65
Stacks
Improve customer engagement with push notifications, location-based marketing and analytics.
Mobile Push Messaging
Visit Website
40
sendwithus
64
Stacks
Email automation for developers + testing and analytics for marketers.
Transactional Email
Visit Website
41
MessageBird
62
Stacks
Making business communications feel as natural as communicating with friends.
Voice and SMS
Visit Website
42
Postscript
60
Stacks
Mailchimp for SMS
Voice and SMS
Visit Website
43
Amazon Pinpoint
57
Stacks
Targeted Push Notifications for Mobile Apps
Mobile Push Messaging
Visit Website
44
OpenTok
55
Stacks
Build live interactive video, voice and messaging into your web and mobile apps
Communications SDK
Visit Website
45
OpenTok
55
Stacks
Build live interactive video, voice and messaging into your web and mobile apps
Communications SDK
Visit Website
46
Twilio API for WhatsApp
52
Stacks
Reach users on the world’s most popular messaging app through one streamlined API, officially sup...
Communications SDK
Visit Website
47
Amazon Polly
47
Stacks
Text to Speech in 47 Voices and 24 Languages
Text-To-Speech as a Service
Visit Website
48
Azure Bot Service
42
Stacks
Intelligent, serverless bot service that scales on demand
Chatbot Platforms & Tools
Visit Website
49
Dovecot
42
Stacks
An open source IMAP and POP3 email server
Email Deliverability
Visit Website
50
WeChat API
39
Stacks
Integrate your killer app onto WeChat's advanced mobile communication platform
Chat API
Visit Website
The Top Communications Tools and Services Ranked By Jobs
Ranked by the number of active job listings a tool is included in
1
LINE
5.6K
Jobs
Get engaged in interactive conversations with LINE users
Communications SDK
Visit Website
Visit Website
2
Twilio
1.4K
Jobs
Bring voice and messaging to your web and mobile applications.
Voice and SMS
Visit Website
Visit Website
3
Braze
226
Jobs
Customer engagement platform
Engagement/Lifecycle Marketing
Visit Website
Visit Website
4
Bandwidth
170
Jobs
Cloud-ready voice, messaging, and 9-1-1 built for the enterprise
Voice and SMS
Visit Website
Visit Website
5
Dialpad
127
Jobs
A pure-cloud business communication platform
Phone
Visit Website
Visit Website
6
Courier
124
Jobs
Deliver your notifications to the best channel for each user
Web Push Notifications
Visit Website
Visit Website
7
WhatsApp
117
Jobs
A freeware, cross-platform messaging and Voice over IP service
Phone
Visit Website
Visit Website
8
SendBird
81
Jobs
A Complete Chat Platform, Messaging and Chat SDK and API
Communications SDK
Visit Website
Visit Website
9
8x8
81
Jobs
Create a better customer experience with SMS, Chat Apps, Video Interaction & Voice
Communications SDK
Visit Website
Visit Website
10
8x8
81
Jobs
Create a better customer experience with SMS, Chat Apps, Video Interaction & Voice
Communications SDK
Visit Website
Visit Website
11
8x8
81
Jobs
Create a better customer experience with SMS, Chat Apps, Video Interaction & Voice
Communications SDK
Visit Website
Visit Website
12
OneSignal
66
Jobs
A high volume push notification service for websites and mobile applications
Mobile Push Messaging
Visit Website
Visit Website
13
OneSignal
66
Jobs
A high volume push notification service for websites and mobile applications
Mobile Push Messaging
Visit Website
Visit Website
14
Aircall
62
Jobs
The phone system for modern business
Phone
Visit Website
Visit Website
15
Plivo
57
Jobs
API platform to build Voice & SMS Applications
Voice and SMS
Visit Website
Visit Website
16
MessageBird
56
Jobs
Making business communications feel as natural as communicating with friends.
Voice and SMS
Visit Website
Visit Website
17
Postfix
52
Jobs
A free and open-source mail transfer agent
Email Deliverability
Visit Website
Visit Website
18
Outspoken
45
Jobs
SMS, MMS, Transcoding and User Lookup API
Voice and SMS
Visit Website
Visit Website
19
Viber
45
Jobs
Free and secure calls and messages
Phone
Visit Website
Visit Website
20
Twilio SendGrid
27
Jobs
Email Delivery. Simplified.
Transactional Email
Visit Website
Visit Website
21
Google Voice
26
Jobs
Smart voice calling on all your devices
Phone
Visit Website
Visit Website
22
RingCentral
26
Jobs
Cloud business phone systems that work the way you do.
Phone
Visit Website
Visit Website
23
ExoPlayer
18
Jobs
An extensible media player for Android
Media Player
Visit Website
Visit Website
24
Nexmo
16
Jobs
API for SMS, Voice and Phone Verification
Voice and SMS
Visit Website
Visit Website
25
SparkPost
15
Jobs
Email Delivery and Analytics for Developers and Enterprises
Transactional Email
Visit Website
Visit Website
26
Servo
13
Jobs
Servo is an open source conversational AI platform,
Chatbot Platforms & Tools
Visit Website
Visit Website
27
Postscript
11
Jobs
Mailchimp for SMS
Voice and SMS
Visit Website
Visit Website
28
Serenity
11
Jobs
A Rust library for the Discord API
Chatbot Platforms & Tools
Visit Website
Visit Website
29
Alexa
11
Jobs
A cloud-based voice service
Voice and SMS
Visit Website
Visit Website
30
Dovecot
6
Jobs
An open source IMAP and POP3 email server
Email Deliverability
Visit Website
Visit Website
31
Knock
6
Jobs
Notification infrastructure for developers
Mobile Push Messaging
Visit Website
Visit Website
32
Yesware
6
Jobs
Lets you track emails and work more effectively, right from your Gmail or Outlook inbox
Mail Merge Tools
Visit Website
Visit Website
33
Knock
6
Jobs
Notification infrastructure for developers
Mobile Push Messaging
Visit Website
Visit Website
34
OpenPhone
5
Jobs
Your business phone, reimagined
Phone
Visit Website
Visit Website
35
Deepgram
6
Jobs
Scalable Speech API for Businesses
Speech Recognition as a Service
Visit Website
Visit Website
36
Walkie
5
Jobs
Design Slack dialogs effortlessly
Chatbot Platforms & Tools
Visit Website
Visit Website
37
VLC
4
Jobs
A free and open source cross-platform multimedia player
Media Player
Visit Website
Visit Website
38
Amazon SNS
4
Jobs
Fully managed push messaging service
Mobile Push Messaging
Visit Website
Visit Website
39
Google Cloud Messaging
4
Jobs
Simple and reliable messaging to reach over a billion devices.
Mobile Push Messaging
Visit Website
Visit Website
40
Agora
3
Jobs
The Real-Time Engagement platform for devs to integrate voice & video chat, interactive live stre...
Voice and SMS
Visit Website
Visit Website
41
Power Virtual Agents
3
Jobs
Easily build, manage, and deploy bots with a no-code interface
Chatbot Platforms & Tools
Visit Website
Visit Website
42
250ok
3
Jobs
Verify, measure, and improve the performance of your email campaigns
Email Deliverability
Visit Website
Visit Website
43
Agora
3
Jobs
The Real-Time Engagement platform for devs to integrate voice & video chat, interactive live stre...
Voice and SMS
Visit Website
Visit Website
44
Airy
3
Jobs
Open source conversational platform & unified messaging APIs
Communications SDK
Visit Website
Visit Website
45
Airy
3
Jobs
Open source conversational platform & unified messaging APIs
Communications SDK
Visit Website
Visit Website
46
Mandrill
3
Jobs
Send transactional, triggered, and personalized email, then track results.
Transactional Email
Visit Website
Visit Website
47
OpenTok
2
Jobs
Build live interactive video, voice and messaging into your web and mobile apps
Communications SDK
Visit Website
Visit Website
48
OpenTok
2
Jobs
Build live interactive video, voice and messaging into your web and mobile apps
Communications SDK
Visit Website
Visit Website
49
Twilio API for WhatsApp
1
Jobs
Reach users on the world’s most popular messaging app through one streamlined API, officially sup...
Communications SDK
Visit Website
Visit Website
50
Messenger Platform
1
Jobs
Tools to help you build your bot and reach 900 million people around the world
Chatbot Platforms & Tools
Visit Website
Visit Website