Contently (Paid): Contently helps leading brands build loyal audiences through premium, original content.

Textbroker (Paid): Freelance writing services with quality options and competitive pricing.

Scripted (Paid): Order content such as blog posts, white papers, and product descriptions with Scripted’s curated network of freelance writers.

NewsCred (Paid): Simplify and scale your entire content marketing process.

Kapost (Paid): Build A Content Operation With Kapost’s Marketing Platform.

Copypress (Paid): A Content Marketing Agency.

ContentKing (Paid): Real-time SEO Auditing and Content Tracking.

Lipperhey (Free with limited features): Free website analysis, free keyword suggestions, free SEO analytics, free backlink checker. Pro package is $99/month.