What are some alternatives?
When comparing Pushwoosh and PushAlert, you can also consider the following products
Airflow - Airflow is a platform to programmaticaly author, schedule and monitor data pipelines.
OneSignal - Customer engagement platform used by 800K+ developers; the fastest and most reliable way to send push notifications.
ifttt - IFTTT puts the internet to work for you. Create simple connections between the products you use every day.
PushCrew - Push Notifications for Websites
Pipefy - The new development platform built for agile teams.
PushOwl - Re-engage website visitors with push notifications