Software to generate forum backlinks

Hi, mates!

I’ve moved to a new niche recently and have analyzed my competitors. It occurs that most of them have the same referring domains and backlinks (forum and guestbooks as a rule), the backlinks even have the same pattern. I suppose some software generates those backlinks. If anyone can recommend a tool that builds this kind of backlinks, please let me know. And do they add any value to a website at all? TIA

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