Facebook, while being the most powerful social media platform is also the hottest portal for advertisers, internet marketers, bloggers, brand to advertise their business. As Facebook has huge users base so it is easier to reach major audience here in contrast with other social media networks.
Among the various ways to promote brand/product/services on Facebook, posting into multiple Facebook groups is the most popular trick that marketers use. They first join many Facebook groups related to their niche and having large number of members (audience) and then start promoting their product/brand.

This trick seems to work perfectly for thousands of marketers/advertisers as they are getting lots of traffic to their posted links to these groups. But, either they do manually posting of their promotions to each and every Facebook groups or use PRO tools like Hootsuite, Buffer, Socialoomph, etc.

1. App Stack Zone

App Stack Zone is offering its Facebook Multi Wall Poster Beta Version 1.01 which lets you post your article links, youtube video links, content to all your group, page and friends with one click. Your privacy is maintained at top-level. No data is saved inside the website. Moreover, you can choose your own app name too.

By default, this app will allow you to post into 3 Facebook group in one shot but when you adds your own App details and security token then you can post to unlimited Facebook groups.

2. FB Share4 BETA

Well, it is not web app. FB Share 4 BETA is a computer software that you can download and install on your Windows PC. It is available in Free and PRO version. Although PRO version of the software provides you unlimited posting features to unlimited Facebook groups and Pages but free version is also very powerful. FB Share 4 BETA free version will let you to share to unlimited Facebook Fanpages, up to 10 groups at a time, share photos/albums and more.

3. Facebook Megaposter

Facebook Megaposter is an another cool application for post in multiple group in facebook. Using this application you can post description / messages / excerpt and links of your webpage. The application runs inside facebook so it secure. you can select facebook target group from the left side.

4. Publish To Multiple Facebook Groups

The script is very powerful and let you posts to multiple facebook groups as well as pages. For free, this multiple facebook wall poster will allow you to publish your post to 5 facebook groups and 5 fanpages. Buy this script to get unlimited posting features. This application will allow you to fully customize your post by adding / modifying message/ links / picture / name / caption / description.

5. 25 Labs Facebook Multiple Walls & Timelines Poster

This script post to multiple facebook walls or timelines using facebook batch request. On this website you can add message / link / picture / name / caption / description and post to first 10 facebook friends , 10 facebook fanpages and 10 facebook groups. Download the script and host it on your own server to access fully functionality.

NOTE :

Although, these scripts are very powerful and offers unlimited publishing to many Facebook walls and Timelines of Facebook friends, Facebook Fanpages and Facebook Groups but it is recommended to not use this script too frequently. Just publish 2-3 times a day to your most important 5-6 groups as it will protect your Facebook account from getting red-flagged and banned.