Sites and apps similar to Ping-O-Matic include Ping.in, which is free. Other options are TotalPing!, Autopinger and pingoat. In total there are four SEO Tools like Ping-O-Matic.
Blog ping service that pings or notifies Weblog Services such as Blog Search Engines and blog directories that your blog has been updated. Thus enabling them to index your blog fast and make your content available for a larger audience.
Autopinger is a free service to help you ping your blogs and podcasts to most available blog/podcast search engines and aggregators remotely and automatically.
