Seems like both provides the same service. Create RSS feeds Spin some content to each URL. Schedule and ping each of your feed Repeat pinging RSS feeds that are yet to crawl by Google. The only difference is their paying plan are: Linklicious starts from $14.99, daily limit 10,000 links Nuclear Link Crawler starts from $12.00, daily limit 20,000 I've got feedback saying Nuclear Link Crawler have better result. I've only used linklicious myself so I don't have experience in Nuclear Link Crawler. Anyone have any feedback on Nuclear Link Crawler?