PushSharp to work with Google Play Services - google-cloud-messaging

I have installed PushSharp for a while on our server and since GCM is deprecated, I wanted to know if somebody has already implemented Google Play Services with this package and what has to be done in the PushSharp code to support Google Play Services.

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Support for browser Push API from notification hubs

I’ve looked in multiple places, but cannot find details of how to register a web site against a notification hub for the sending and receiving of push messages.
The only like examples I have seen use a custom Node.js server for the web site to interact with.
Would really prefer to use a hub so we can send tagged messages to our browser app at the same time as our native apps.
It sounds like you want to register a web application to Azure Notification Hub to receive notification message. A web application can be as backend to send notification message using SDK in different languages like .NET, Node.js, Java, PHP, and Python. But the answer to receive notification message from web is absolutely not, there is an answer of the exising SO thread Can we register a webapplication to recieve notification from azure notification hub which has answered it.
Azure Notification Hubs are exclusively for push notifications for mobile platforms.
Only one exception is Google Cloud Messaging (GCM) supports Chrome Apps, please see the tutorial Tutorial: Push notifications to Chrome apps with Azure Notification Hubs
For sending and receiving Push Notification in browser, the only way is using Web Push API, you can refer to my answer of this SO thread Azure browser push notification for chrome, firefox ,and safari browser. And there is a Mozilla cookbook site for Web Push to show some examples to help getting started. Then, you can host your web push server on Azure. These Mozilla examples' backend are all using JavaScript based on Node.js, you can get the other web push libraries at this GitHub org web-push-libs if you want to use other languages.

Does Bluemix support MBaaS (Mobile Backend as a Service)?

I am reading about and then trying to use IBM Bluemix. I have seen some confusing statement about MBaaS support on Bluemix. Some sites mention that Bluemix is a PaaS, and some places say it supports MBaaS. I have basic doubts: does IBM support MBaaS? If yes, where can I find the full MBaaS features list for IBM Bluemix? I couldn't find it in IBM site.
You're correct: Bluemix is a PaaS. However as you probably know and as you can see here:
Mobile backend as a service (MBaaS) enables you to quickly integrate
your mobile apps with data and functions in security-rich, backend,
cloud storage. MBaaS is usually delivered through a set of custom
software development kits (SDKs) and application programming
interfaces (APIs). MBaaS can offer you full data synchronization, user
management, push notifications, integration with social networking
services, and file-handling.
A PaaS provides SDKs and APIs and for this reason it can support MBaaS. In Bluemix the MBaaS capabilities are provided by the MobileFirst platform. It is designed for building and enhancing multiplatform, enterprise-grade apps that can be native or hybrid – for Android, iOS, and Windows. You can get started here.
Yes, Bluemix Mobile supports a Mobile Backend as a Service.
Here are the current services that we have that support the MBaaS pattern and a bit of information about them (and here's a quick graphical view and some links for how to get started):
Mobile Client Access
This service enables you to secure your Mobile Application. You can add Facebook, Google, or custom authentication to your application.
Push Notifications
You can add the Push Notifications service to send push notifications to your app on Android and iOS.
Mobile Analytics (Beta)
The Mobile Analytics service enables you to gather crash and usage knowlege about customers using your mobile app.
Cloudant NoSQL DB
The Cloudant service is the IBM NoSQL database to store your data.
Object Storage
The Object Storage service is an unstructured cloud data store where you can store things like images or files.
Mobile Foundation
The catalog also includes the Mobile Foundation service which you can use to create a test environment before deploying or purchasing the on-premise software. This service is another way for enabling a developer to create a mobile channel.
You may have a look at this :
http://www.ibm.com/mobilefirst/mobile-backend-as-a-service/mbaas.html

Subscribing Tags in Google Cloud messaging

I'm working with Windows Azure Notification Hub and Android, testing the notifications push service through GCM. I'm using tags, pushing notifications from a Web application (back-end) integrated with Windows Azure.
The issue is: I don't know how to subscribe from an Android App to listen to those tags.
Create a Custom API with Azure Mobile Apps Server SDK. This should take the device registration Id and then do the registration with Notification Hubs. Azure Mobile Apps Server SDK wraps the Notification Hubs SDK for this purpose.
In your client, you can follow the appropriate Client SDK tutorial on push (Android is here), but use InvokeApi to invoke your custom API to do the registration instead of calling client.getPush().register().
Another good reference is the Android Client HOWTO Docs.

Connecting to QuickBooks using API

I need some guidelines here. I am creating an online booking system for my client that interfaces with QuickBooks on their internal network (desktop QuickBooks, not online).
Do I need to go the full "publish app" route? I do not wish to sell this app in the marketplace. This is merely a custom booking system designed and paid for by the client. It seems like I need to "publish" the app in the marketplace for them to be able to use it.
Are there ways around this?
Update 06/23/2015 - To connect to a desktop QuickBooks installation the SDK with the Web Connector is now the only recommended approach. Intuit is removing Intuit Partner Platform (IPP) integration to desktop QuickBooks.
For the SDK/Web Connector, you don't need to go through any publication process or anything like that. Just build the solution, and connector your client.
There's a pretty good overview of how the QuickBooks web connector works on our QuickBooks wiki.
The QuickBooks SDK download also includes a huge PDF with detailed documentation about how to implement SDK/Web Connector applications as well.

Can I create a Hangout "client" program? (kind of Google TalkAbout)

As stated in the Google Talk for Developers site, you can use the provided APIs to build a client that connects to the Google Talk service.
I would like to know if it's possible (or it will be in the near future) to build a similar client to the google hangouts.
What we pretend is to build something similar to cloud print, that provides printing services to the cloud, but for audio/video streaming: a camera and microphone would replace the
printer.
Thanks a lot.
Talk and all the XMPP stuff is going to be put down soon.
The new Hangouts infrastructure is proprietary. It only has API to integrate Hangouts into web pages and applications, but no API or protocol to create an alternative Hangouts client software.
https://github.com/tdryer/hangups is a library that does exactly that, with a command-line client for Linux.
https://github.com/xmikos/qhangups is a PyQt-based cross-platform app that aims to provide an open-source alternative to the Chrome-based official desktop app. Unfortunately it's not working at the time of posting, but the author is investigating the issue.