Onset Computer Corporation, Bourne, MA (http://www.onsetcomp.com)

Onset is a 30 year old manufacturing company specializing in energy monitoring, field research and water monitoring data loggers, selling over 2 million since 1981. They have added wireless options in recent years. They have well hardened outdoor sensors with integrated solar recharging for weather station, temperature, soil moisture and indoor sensors for temperature and humidity with line-of-site ranges of 100 to 200 ft. However they have no cloud software except for the weather station; all other sensors send data only to the computer which can send email alerts. They are local to New England and have a good web site and documentation of all components with many quick start and setup guides. Prices for wireless indoor temp sensor are $169, a router is $159 and USB Gateway $199.

If your interest is primarily temperature and soil moisture sensors or weather stations this company would be worth considering although using many temperature sensors would be more expensive than Monnit. or Mojyle.  Many farmers have been using their HOBO loggers for years.

We have not acquired or tested this equipment.