I have to promote software & web development website so please share content marketing plan for it. Thanks.
Also, I am sending you my account number... Transfer your this month salary into my account. Come on man. You are directly asking us to create and send you marketing plan for your website. If we send you marketing plan than what work is left for you? Do your website market research, find out what your competitor did to promote his services and using that data, create a promotional plan for your website.
I totally agree with @smithrick. It looks like you don't want to work and that is selfish. This task will take a lot of time and no one will do it better, than you. Research the market and your target audience, find out, what they are willing to read and when. Your content plan should be engaging and interesting for your future clients. As for a software and web development company, I'd suggest you post articles, that will help your potential customers to understand the web development process better.
What will be the work left to do by SEO Companies if everybody started asking such questions and get them solved in forums?
@finesubmit content marketing plan is very simple to the well experienced people but for the likes of you that didn't really know how to and what is for your own service. Have pity on your client/s.