I've been using pipedrive.com for deal flow.
And checkout Segment.io
Also, I've got triggers in my app that spawn Trello cards. I feed Trello, then manually do stuff in the other systems. Ugly but I can switch out other tools easier. This lets me try new tools faster, and switch back too.
Vocus.io (I'm the founder but also happen to rely heavily on it for our own growth). Great for outreach and customer support.
Others:
- Mixpanel
- Pipedrive
- CloudWatchCrm - streak crm (http://www.streak.crm), nice crm that integrates with gmail. Used to categorize email communication. Email marketing - listshine (http://www.listshine.com) cheap alternative to mailchimp, used to regularly email new and existing customers.
Simple is better. Start with the minimum and as you build demand introduce tools.
Basecamp (project management)$
Skype(chat/collab)
Piwik (analytics)free
Ahrefs (SEO)$
Google Mail (email)$
Google Cloud (hosting)$
Amazon S3 (backup)$
WordPress (CMS)free
Prosperworks (CRM)$
Hootsuite (social)$
AdEspresso (social ppc)
If you think chat is relevant to your business I suggest you'd give drift.com a spin.
You seem to be discussing tooling rather than channels.
Appropriate marketing channels vary distinctly by business type, development level and market positioning. Service vs. product, physical vs. digital, popular vs. specialist, early stage vs. validating vs. growth-phrase vs. stable, desired audience, phase of moon, etc.
In general tooling should be determined by the channel, not the other way around.
The advice given to me by a very successful CFO (many $Ms personal exit, multi-decade angel, now running an accelerator) on my first business was: "test each channel". That means: marketing spend per new prospect, conversion percentage, repeat customer percentage, customer lifetime or fixed-period value estimate, and maybe other channel properties like responsiveness, customer demographic or other data available, markets served, total available inbound volume. Try to keep the building of this data for objective channel-vs-channel analysis as your focus, and don't get distracted. Remember, you're being marketed to. ;)
If you're lucky, you'll find a strong channel. In most cases, you simply need to sink a certain minimum amount of capital to get your customer base large enough to get in the black. Take it from me - not having this war-chest can cost you the business (as it did my first). If you find yourself in that position, workarounds can include partnerships with established networks, acquisitions, pivots to SaaS-conversions ... but again it depends on the business. Good luck out there :)