How to
![image: Building with SDKs versus Components](https://www.pubnub.com/cdn/3prze68gbwl1/3ItMwZBz343bXksukTotLO/e7c354fa3bcb9cb0864fdb097c628eae/sdkVComp.png?w=360&h=200&fit=)
Chat
Building Chat: Building with SDKs versus Components
Follow this how-to to understand the differences around building chat application with Chat Components or SDKs
![Message Timestamps image](https://www.pubnub.com/cdn/3prze68gbwl1/4ne9oJW19m4obpW6TGBUEw/72769303515f46914379b1a4b3f491de/messagetimestamps.png?w=360&h=200&fit=)
Chat
Building Chat: Dealing with timestamps
Follow this how-to to understand how to deal with and format timestamps for PubNub Chat applications.
![How-To: Building Collaborative Apps](https://www.pubnub.com/cdn/3prze68gbwl1/7k7dqDZYn6jT8Pudcvjs7g/ea3b2c6bd3250944a0089fb91b12a0ef/Screen_Shot_2022-08-30_at_11.33.57_AM.png?w=360&h=200&fit=)
Collaboration
Build Collaborative Applications
Follow this how-to and learn how you can build and power your real-time collaborative applications with PubNub.
![How to telemedicine](https://www.pubnub.com/cdn/3prze68gbwl1/3kxt4nL0qg20RP3bicABzF/a7408bf07928e8b163f9a93555165c1f/How-to-Telemedicine-Image.jpg?w=360&h=200&fit=)
Chat
How to Build a Telemedicine App
Read our complete guide on making your own telemedicine app. In this guide, you’ll learn about telemedicine, HIPPA, PHI, and solutions for building.
![Telehealth Tutorial cross-platform Multiple devices showing a telemedicine chat application with conversations between doctors and patients.](https://www.pubnub.com/cdn/3prze68gbwl1/YImhMz8bJU4tjn1gXtryj/65e6df2e74858ef07bb70088dde5f026/18-new2.png?w=360&h=200&fit=)
Chat
How to Build Cross-Platform Chat Applications with PubNub
If your team is developing a cross-platform application you have a number of options to choose from but whichever approach you take, from web-only to cross-platform frameworks, PubNub can easily incorporate chat into your app.
![How-to Build Vue Chat Apps](https://www.pubnub.com/cdn/3prze68gbwl1/3unV0nzOBgNrauUqfluAd7/9b623bcba4978b74233e305899d71c9a/How-to-Build-a-Chat-App_1200x630_-1.png?w=360&h=200&fit=)
Chat
How to build a chat app using HTML, CSS, Vue, & JS
Read our complete guide to build a chat app using HTML, CSS, Vue, and JS. Read this and our other information building interactive chat apps.
![Real_Time_Geolocation_1200x630.jpg Real_Time_Geolocation_1200x630.jpg](https://www.pubnub.com/cdn/3prze68gbwl1/CcwAhmNWk9ti8Qcu9sNSf/7a69c45170e28cddb6733ce8d63cb2af/Real_Time_Geolocation_1200x630.jpg?w=360&h=200&fit=)
Geolocation
How to Explore Real-time Geolocation Solutions
This how-to will explain real-time geolocation services for developers, what to consider while building geolocation features, and how PubNub can make it easy to stream and use real-time location data.
![Alexa Skills with PubNub Architecture Alexa Skills with PubNub Architecture](https://www.pubnub.com/cdn/3prze68gbwl1/YSdmLmTnXIRz2UWq5bJSz/62cbdd8ab096757634378abbb5848124/architecture.png?w=360&h=200&fit=)
Collaboration
How to call PubNub from Alexa
Amazon’s Echo is the market leading smart speaker and we see an increasing number of customers want to integrate Alexa into their PubNub solution
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