What are some alternatives?
When comparing Quotemarks and QuoteDark, you can also consider the following products
Brainyquote - Database of quotations by topic or author.
Wikiquote - A free quote database built collaboratively using Wiki software, a sister project to Wikipedia.
Quotefancy - Quotefancy is on a mission of turning inspiring quotes into beautiful wallpapers.
Power Quotations - Collection of quotes by famous people order by author and topic.
SportsQuotes.info - Sports Quotes, Inspirational Quotes for Athletes and Teams
Curated Quotes - The best collections of quotations by topic.