Name the number of developed by for solid edge
CREATE TABLE "table1_19495707_1" (
  "application" text,
  "latest_release_date_and_version" text,
  "developed_by" text,
  "platforms" text,
  "mainly_used_for" text,
  "license" text
);
SELECT COUNT("developed_by") FROM "table1_19495707_1" WHERE "application"='Solid Edge';