Is there a way to link to all of a developer's Google Play Store apps?

Search for a product, including the pub: tag, as can be found at the API page entitled Linking to your products. Note that searching via a URL requires a different method. Both are included here. Start an intent like this:

try {
    startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("market://search?q=pub:Developer+Name+Here")));
} catch (android.content.ActivityNotFoundException anfe) {
    startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("http://play.google.com/store/apps/developer?id=Developer+Name+Here")));
}

Note that the market doesn't work on the emulator, so this code will instead pull it up in a URL. This method courtesy of this answer.

Just use the developer parameter. This is the shortcut for googles

https://play.google.com/store/apps/developer?id=Google+Inc.

Google's Apps

Just put a + between works if there are spaces

Android actually has an even better way to handle this.

You can also group all your applications by the package names, provided you had the discipline to actually think over it. For instance, if all my apps start with com.mycompanyname.androidappname, I can simply search https://play.google.com/store/search?q=com.mycompanyname.*